NEET 2025 EXAM : Question 1 of 180

Given below are two statements:Statement-I: In the RNA world, RNA is considered the first genetic material evolved to carry out essential life processes. RNA acts as a genetic material and also as a catalyst for some important biochemical reactions in living systems. Being reactive, RNA is unstable.Statement-II: DNA evolved from RNA and is a more stable genetic material . Its double helical strands being complimentary, resist changes by evolving repairing mechanism.In the light of the above statements, choose the most appropriate answer from the options given below: Given below are two statements:Statement-I: In the RNA world, RNA is considered the first genetic material evolved to carry out essential life processes. RNA acts as a genetic material and also as a catalyst for some important biochemical reactions in living systems. Being reactive, RNA is unstable.Statement-II: DNA evolved from RNA and is a more stable genetic material . Its double helical strands being complimentary, resist changes by evolving repairing mechanism.In the light of the above statements, choose the most appropriate answer from the options given below:

4 Mark(s)

Both statement I and statement II are correct.
Both statement I and statement II are incorrect.
Statement I is correct but statement II is incorrect.
Statement I is incorrect but statement II is correct.

Match List-I with List-II.List-I (Mixture)A. CHCl₃ + C₆H₅NH₂B. Crude oil in petroleum industryC. Glycerol from spent-lyeD. Aniline-waterList-II (Method of Separation)I. Distillation under reduced pressureII. Steam distillationIII. Fractional distillationIV. Simple distillationChoose the correct answer from the options given below: Match List-I with List-II.List-I (Mixture)A. CHCl₃ + C₆H₅NH₂B. Crude oil in petroleum industryC. Glycerol from spent-lyeD. Aniline-waterList-II (Method of Separation)I. Distillation under reduced pressureII. Steam distillationIII. Fractional distillationIV. Simple distillationChoose the correct answer from the options given below:

4 Mark(s)

A-IV, B-III, C-I, D-II A-IV, B-III, C-I, D-II
A-IV, B-III, C-II, D-I A-IV, B-III, C-II, D-I
A-III, B-IV, C-I, D-II A-III, B-IV, C-I, D-II
A-III, B-IV, C-II, D-I A-III, B-IV, C-II, D-I

Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution. Sweet potato and potato represent a certain type of evolution. Select the correct combination of terms to explain the evolution.

4 Mark(s)

Analogy, convergent Analogy, convergent
Homology, divergent Homology, divergent
Homology, convergent Homology, convergent
Analogy, divergent Analogy, divergent

Which one of the following phytohormones promotes nutrient mobilization which help in the delay of leaf senescence in plants? Which one of the following phytohormones promotes nutrient mobilization which help in the delay of leaf senescence in plants?

4 Mark(s)

Ethylene Ethylene
Abscisic acid Abscisic acid
Gibberellin Gibberellin
Cytokinin Cytokinin

Match List-I with List-II.List-I(a) Chlorophyll-a(b) Chlorophyll-b(c) Xanthophylls(d) CarotenoidsList-II(i) Yellow- green(ii) Yellow(iii) Blue- green(iv) Yellow to Yellow-orangeChoose the option from with all correct matches. Match List-I with List-II.List-I(a) Chlorophyll-a(b) Chlorophyll-b(c) Xanthophylls(d) CarotenoidsList-II(i) Yellow- green(ii) Yellow(iii) Blue- green(iv) Yellow to Yellow-orangeChoose the option from with all correct matches.

4 Mark(s)

A-III, B-IV, C-II, D-I A-III, B-IV, C-II, D-I
A-III, B-I, C-II, D-IV A-III, B-I, C-II, D-IV
A-I, B-II, C-IV, D-III A-I, B-II, C-IV, D-III
A-I, B-IV, C-III, D-II A-I, B-IV, C-III, D-II

A particle of mass m is moving around the origin with a constant force F⃗\vec F pulling it towards the origin. If Bohr model is used to describe its motion, the radius r of the nᵗʰ orbit and the particle’s speed v in the orbit depend on n as A particle of mass m is moving around the origin with a constant force F⃗\vec F pulling it towards the origin. If Bohr model is used to describe its motion, the radius r of the nᵗʰ orbit and the particle’s speed v in the orbit depend on n as

4 Mark(s)

r∝n13;v∝n13r\propto n^{\frac13};v\propto n^{\frac13}
r∝n13;v∝n23r\propto n^{\frac13};v\propto n^{\frac23}
r∝n23;v∝n13r\propto n^{\frac23};v\propto n^{\frac13}
r∝n43;v∝n13r\propto n^{\frac43};v\propto n^{\frac13}

Given below are the steps in the life cycle of pteridophytes. Arrange the following steps in the correct sequence.A. Prothallus stageB. Meiosis in spore mother cellsC. FertilisationD. Formation of archegonia and antheridia in gametophyteE. Transfer of antherozoids to the archegonia in presence of water.Choose the correct answer from the options given below: Given below are the steps in the life cycle of pteridophytes. Arrange the following steps in the correct sequence.A. Prothallus stageB. Meiosis in spore mother cellsC. FertilisationD. Formation of archegonia and antheridia in gametophyteE. Transfer of antherozoids to the archegonia in presence of water.Choose the correct answer from the options given below:

4 Mark(s)

B, A, D, E, C B, A, D, E, C
B, A, E, C, D B, A, E, C, D
D, E, C, A, B D, E, C, A, B
E, D, C, B, A E, D, C, B, A

Given below are two statements :Statement-I: A hypothetical diatomic molecule with bond order zero is quite stable.Statement-II: As bond order increases, the bond length increase.In the light of the above statements, choose the most appropriate answer from the options given below : Given below are two statements :Statement-I: A hypothetical diatomic molecule with bond order zero is quite stable.Statement-II: As bond order increases, the bond length increase.In the light of the above statements, choose the most appropriate answer from the options given below :

4 Mark(s)

Both Statement I and Statement II are true
Both Statement I and Statement II are false
Statement I is true but Statement II are false
Statement I is false but Statement II are true

Role of the water vascular system in Echinoderms is:A. Respiration and LocomotionB. Excretion and LocomotionC. Capture and transport of foodD. Digestion and RespirationE. Digestion and ExcretionChoose the correct answer from the options given below: Role of the water vascular system in Echinoderms is:A. Respiration and LocomotionB. Excretion and LocomotionC. Capture and transport of foodD. Digestion and RespirationE. Digestion and ExcretionChoose the correct answer from the options given below:

4 Mark(s)

A and B only A and B only
A and C only A and C only
B and C only B and C only
B, D and E only B, D and E only

Polymerase chain reaction (PCR) amplifies DNA following the equation Polymerase chain reaction (PCR) amplifies DNA following the equation

4 Mark(s)

N² N²
2ⁿ 2ⁿ
2n + 1 2n + 1
2N² 2N²

A parallel plate capacitor made of circular plates is being charged such that the surface charge density on its plates is increasing at a constant rate with time. The magnetic field arising due to displacement current is : A parallel plate capacitor made of circular plates is being charged such that the surface charge density on its plates is increasing at a constant rate with time. The magnetic field arising due to displacement current is :

4 Mark(s)

zero at all places zero at all places
constant between the plates and zero outside the plates
non-zero everywhere with maximum at the imaginary cylindrical surface connecting peripheries of the plates
zero between the plates and non-zero outside

Match List-I with List-II.List-I (Name of the Vitamin)A. Vitamin B₁₂B. Vitamin DC. Vitamin B₂D. Vitamin B₆List-II (Deficiency disease)I. CheilosisII. ConvulsionsIII. RicketsIV. Pernicious anaemiaChoose the correct answer from the options given below: Match List-I with List-II.List-I (Name of the Vitamin)A. Vitamin B₁₂B. Vitamin DC. Vitamin B₂D. Vitamin B₆List-II (Deficiency disease)I. CheilosisII. ConvulsionsIII. RicketsIV. Pernicious anaemiaChoose the correct answer from the options given below:

4 Mark(s)

A-I, B-III, C-II, D-IV A-I, B-III, C-II, D-IV
A-IV, B-III, C-I, D-II A-IV, B-III, C-I, D-II
A-II, B-III, C-I, D-IV A-II, B-III, C-I, D-IV
A-IV, B-III, C-II, D-I A-IV, B-III, C-II, D-I

Identify the statement that is NOT correct. Identify the statement that is NOT correct.

4 Mark(s)

Each antibody has two light and two heavy chains.
The heavy and light chains are held together by disulfide bonds.
Antigen binding site is located at C-terminal region of antibody molecules.
Constant region of heavy and light chains are located at C-terminus of antibody molecules.

Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).Original assertionReason (R) : Iodine is a better leaving group because of its large size.In the light of the above statements, choose the correct answer from the options given below : Given below are two statements : one is labelled as Assertion (A) and the other is labelled as Reason (R).Original assertionReason (R) : Iodine is a better leaving group because of its large size.In the light of the above statements, choose the correct answer from the options given below :

4 Mark(s)

Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false A is true but R is false
A is false but R is true A is false but R is true

Two identical charged conducting spheres A and B have their centres separated by a certain distance. Charge on each sphere is q and the force of repulsion between them is F. A third identical uncharged conducting sphere is brought in contact with sphere A first and then with B and finally removed from both. New force of repulsion between spheres A and B (Radii of A and B are negligible compared to the distance of separation so that for calculating force between them they can be considered as point charges) is best given as : Two identical charged conducting spheres A and B have their centres separated by a certain distance. Charge on each sphere is q and the force of repulsion between them is F. A third identical uncharged conducting sphere is brought in contact with sphere A first and then with B and finally removed from both. New force of repulsion between spheres A and B (Radii of A and B are negligible compared to the distance of separation so that for calculating force between them they can be considered as point charges) is best given as :

4 Mark(s)

3F/15 3F/15
2F/3 2F/3
F/2 F/2
3F/8 3F/8

The correct sequence of events in the life cycle of bryophytes isA. Fusion of antherozoid with egg.B. Attachment of gametophyte to substratum.C. Reduction division to produce haploid spores.D. Formation of sporophyte.E. Release of antherozoids into water.Choose the correct answer from the options given below: The correct sequence of events in the life cycle of bryophytes isA. Fusion of antherozoid with egg.B. Attachment of gametophyte to substratum.C. Reduction division to produce haploid spores.D. Formation of sporophyte.E. Release of antherozoids into water.Choose the correct answer from the options given below:

4 Mark(s)

D, E, A, C, B D, E, A, C, B
B, E, A, C, D B, E, A, C, D
B, E, A, D, C B, E, A, D, C
D, E, A, B, C D, E, A, B, C

Match List-I with List-II.List-IA. ProgesteroneB. RelaxinC. Melanocyte stimulating hormoneD. CatecholaminesList-III. Pars intermediaII. OvaryIII. Adrenal MedullaIV. Corpus luteumChoose the correct answer from the options given below: Match List-I with List-II.List-IA. ProgesteroneB. RelaxinC. Melanocyte stimulating hormoneD. CatecholaminesList-III. Pars intermediaII. OvaryIII. Adrenal MedullaIV. Corpus luteumChoose the correct answer from the options given below:

4 Mark(s)

A-IV, B-II, C-I, D-III A-IV, B-II, C-I, D-III
A-IV, B-II, C-III, D-I A-IV, B-II, C-III, D-I
A-II, B-IV, C-I, D-III A-II, B-IV, C-I, D-III
A-III, B-II, C-IV, D-I A-III, B-II, C-IV, D-I

A full wave rectifier circuit with diodes (D₁) and (D₂) is shown in the figure. If input supply voltage Vᵢₙ = 220 sin (100 π t) volt, then at t = 15 msec

4 Mark(s)

D₁ is forward biased, D₂ is reverse biased
D₁ is reverse biased, D₂ is forward biased
D₁ and D₂ both are forward biased
D₁ and D₂ both are reverse biased

Which of the following genetically engineered organisms was used by Eli Lilly to prepare human insulin? Which of the following genetically engineered organisms was used by Eli Lilly to prepare human insulin?

4 Mark(s)

Bacterium Bacterium
Yeast Yeast
Virus Virus
Phage Phage

Which one of the following is the characteristic feature of gymnosperms? Which one of the following is the characteristic feature of gymnosperms?

4 Mark(s)

Seeds are enclosed in fruits. Seeds are enclosed in fruits.
Seeds are naked. Seeds are naked.
Seeds are absent. Seeds are absent.
Gymnosperms have flowers for reproduction.

Find the correct statements:A. In human pregnancy, the major organ systems are formed at the end of 12 weeks.B. In human pregnancy the major organ systems are formed at the end of 8 weeks.C. In human pregnancy heart is formed after one month of gestation.D. In human pregnancy, limbs and digits develop by the end of second month.E. In human pregnancy the appearance of hair is usually observed in the fifth month.Choose the correct answer from the options given below: Find the correct statements:A. In human pregnancy, the major organ systems are formed at the end of 12 weeks.B. In human pregnancy the major organ systems are formed at the end of 8 weeks.C. In human pregnancy heart is formed after one month of gestation.D. In human pregnancy, limbs and digits develop by the end of second month.E. In human pregnancy the appearance of hair is usually observed in the fifth month.Choose the correct answer from the options given below:

4 Mark(s)

A and E only A and E only
B and C only B and C only
B, C, D and E only B, C, D and E only
A, C, D and E only A, C, D and E only

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A): A typical unfertilised, angiosperm embryo sac at maturity is 8 nucleate and 7-celled.Reason (R): The egg apparatus has 2 polar nuclei.In the light of the above statements, choose the correct answer from the options given below: Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A): A typical unfertilised, angiosperm embryo sac at maturity is 8 nucleate and 7-celled.Reason (R): The egg apparatus has 2 polar nuclei.In the light of the above statements, choose the correct answer from the options given below:

4 Mark(s)

Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is NOT the correct explanation of A.
A is true but R is false. A is true but R is false.
A is false but R is true. A is false but R is true.

Consider the following:A. The reductive division for the human female gametogenesis starts earlier than that of the male gametogenesis.B. The gap between the first meiotic division and the second meiotic division is much shorter for males compared to females.C. The first polar body is associated with the formation of the primary oocyte.D. Luteinizing Hormone (LH) surge leads to disintegration of the endometrium and onset of menstrual bleeding.Choose the correct answer from the options given below: Consider the following:A. The reductive division for the human female gametogenesis starts earlier than that of the male gametogenesis.B. The gap between the first meiotic division and the second meiotic division is much shorter for males compared to females.C. The first polar body is associated with the formation of the primary oocyte.D. Luteinizing Hormone (LH) surge leads to disintegration of the endometrium and onset of menstrual bleeding.Choose the correct answer from the options given below:

4 Mark(s)

A and B are true A and B are true
A and C are true A and C are true
B and D are true B and D are true
B and C are true B and C are true

Given below are two statements:Statement-I: The primary source of energy in an ecosystem is solar energy.Statement-II: The ratio of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).In the light of the above statements, choose the most appropriate answer from the options given below: Given below are two statements:Statement-I: The primary source of energy in an ecosystem is solar energy.Statement-II: The ratio of production of organic matter during photosynthesis in an ecosystem is called net primary productivity (NPP).In the light of the above statements, choose the most appropriate answer from the options given below:

4 Mark(s)

Both statement I and statement II are correct.
Both statement I and statement II are incorrect.
Statement I is correct but statement II is incorrect.
Statement I is correct but statement II is correct.

Which one of the following statements refers to Reductionist Biology? Which one of the following statements refers to Reductionist Biology?

4 Mark(s)

Physico-chemical approach to study and understand living organisms.
Physiological approach to study and understand living organisms.
Chemical approach to study and understand living organisms.
Behavioural approach to study and understand living organisms.

Which factor is important for termination of transcription? Which factor is important for termination of transcription?

4 Mark(s)

α (alpha) α (alpha)
σ (sigma) σ (sigma)
ρ (rho) ρ (rho)
γ (gamma) γ (gamma)

A photon and an electron (mass m) have the same energy E. The ratio (λphoton/λelectron)\left(\lambda_{\text{photon}}/\lambda_{\text{electron}}\right) of their de-Broglie wavelengths is: (c is the speed of light) A photon and an electron (mass m) have the same energy E. The ratio (λphoton/λelectron)\left(\lambda_{\text{photon}}/\lambda_{\text{electron}}\right) of their de-Broglie wavelengths is: (c is the speed of light)

4 Mark(s)

E2m\sqrt{\frac{E}{2m}} E2m\sqrt{\frac{E}{2m}}
c2mEc\sqrt{2mE} c2mEc\sqrt{2mE}
c2mEc\sqrt{\frac{2m}{E}} c2mEc\sqrt{\frac{2m}{E}}
1cE2m\frac1c\sqrt{\frac{E}{2m}} 1cE2m\frac1c\sqrt{\frac{E}{2m}}

The protein portion of an enzyme is called The protein portion of an enzyme is called

4 Mark(s)

Cofactor Cofactor
Coenzyme Coenzyme
Apoenzyme Apoenzyme
Prosthetic group Prosthetic group

The Sun rotates around its centre once in 27 days. What will be the period of revolution if the Sun were to expand to twice its present radius without any external influence? Assume the Sun to be a sphere of uniform density. The Sun rotates around its centre once in 27 days. What will be the period of revolution if the Sun were to expand to twice its present radius without any external influence? Assume the Sun to be a sphere of uniform density.

4 Mark(s)

100 days 100 days
105 days 105 days
115 days 115 days
108 days 108 days

Two gases A and B are filled at the same pressure in separate cylinders with movable pistons of radius rAr_A and rBr_B, respectively. On supplying an equal amount of heat to both the systems reversibly under constant pressure, the pistons of gas A and B are displaced by 16 cm and 9 cm, respectively. If the change in their internal energy is the same, then the ratio rArB\frac{r_A}{r_B} is equal to Two gases A and B are filled at the same pressure in separate cylinders with movable pistons of radius rAr_A and rBr_B, respectively. On supplying an equal amount of heat to both the systems reversibly under constant pressure, the pistons of gas A and B are displaced by 16 cm and 9 cm, respectively. If the change in their internal energy is the same, then the ratio rArB\frac{r_A}{r_B} is equal to

4 Mark(s)

43\frac43 43\frac43
34\frac34 34\frac34
23\frac2{\sqrt3} 23\frac2{\sqrt3}
32\frac{\sqrt3}{2} 32\frac{\sqrt3}{2}

In some appropriate units, time (t) and position (x) relation of a moving particle is given by t = x² + x. The acceleration of the particle is

4 Mark(s)

−(x+2)32
−2(2x+1)3-\frac{2}{(2x+1)^3}
+2(x+1)3+\frac{2}{(x+1)^3}
+22x+1+\frac{2}{2x+1}

Which of the following microbes is NOT involved in the preparation of household products?A. Aspergillus nigerB. LactobacillusC. Trichoderma polysporumD. Saccharomyces cerevisiaeE. Propionibacterium sharmaniiChoose the correct answer from the options given below: Which of the following microbes is NOT involved in the preparation of household products?A. Aspergillus nigerB. LactobacillusC. Trichoderma polysporumD. Saccharomyces cerevisiaeE. Propionibacterium sharmaniiChoose the correct answer from the options given below:

4 Mark(s)

A and B only A and B only
A and C only A and C only
C and D only C and D only
C and E only C and E only

How many meiotic and mitotic divisions need to occur for the development of a mature female gametophyte from the megaspore mother cell in an angiosperm plant? How many meiotic and mitotic divisions need to occur for the development of a mature female gametophyte from the megaspore mother cell in an angiosperm plant?

4 Mark(s)

2 Meiosis and 3 Mitosis 2 Meiosis and 3 Mitosis
1 Meiosis and 2 Mitosis 1 Meiosis and 2 Mitosis
1 Meiosis and 3 Mitosis 1 Meiosis and 3 Mitosis
No Meiosis and 3 Mitosis No Meiosis and 3 Mitosis

Match List-I with List-II.List-IA. The Evil QuartetB. Ex situ conservationC. Lantana camaraD. DodoList-III. CryopreservationII. Alien species invasionIII. Causes of biodiversity lossesIV. ExtinctionChoose the option with all correct matches: Match List-I with List-II.List-IA. The Evil QuartetB. Ex situ conservationC. Lantana camaraD. DodoList-III. CryopreservationII. Alien species invasionIII. Causes of biodiversity lossesIV. ExtinctionChoose the option with all correct matches:

4 Mark(s)

A-III, B-II, C-I, D-IV A-III, B-II, C-I, D-IV
A-III, B-I, C-II, D-IV A-III, B-I, C-II, D-IV
A-III, B-IV, C-II, D-I A-III, B-IV, C-II, D-I
A-III, B-II, CIV, D-I A-III, B-II, CIV, D-I

Who proposed that the genetic code for amino acids should be made up of three nucleotides? Who proposed that the genetic code for amino acids should be made up of three nucleotides?

4 Mark(s)

George Gamow George Gamow
Francis Crick Francis Crick
Jacque Monod Jacque Monod
Franklin Stahl Franklin Stahl

What is the name of the blood vessel that carries deoxygenated blood from the body to the heart in a frog? What is the name of the blood vessel that carries deoxygenated blood from the body to the heart in a frog?

4 Mark(s)

Aorta Aorta
Pulmonary artery Pulmonary artery
Pulmonary vein Pulmonary vein
Vena cava Vena cava

Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A): Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus.Reason (R): Presence of more than one nucleus in the tapetum increases the efficiency of nourishing the developing microspore mother cells.In light of the above statements, choose the most appropriate answer from the options given below: Given below are two statements: One is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A): Cells of the tapetum possess dense cytoplasm and generally have more than one nucleus.Reason (R): Presence of more than one nucleus in the tapetum increases the efficiency of nourishing the developing microspore mother cells.In light of the above statements, choose the most appropriate answer from the options given below:

4 Mark(s)

Both A and R are true and R is the correct explanation of A .
Both A and R are true but R is NOT the correct explanation of A .
A is true but R is false. A is true but R is false.
A is false but R is true. A is false but R is true.

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A): All vertebrates are chordates but all chordates are not vertebrate.Reason (R): The members of subphylum vertebrata possess notochord during the embryonic period, the notochord is replaced by a cartilagenous or bony vertebral column in adults.In the light of the above statements, choose the correct answer from the options given below: Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A): All vertebrates are chordates but all chordates are not vertebrate.Reason (R): The members of subphylum vertebrata possess notochord during the embryonic period, the notochord is replaced by a cartilagenous or bony vertebral column in adults.In the light of the above statements, choose the correct answer from the options given below:

4 Mark(s)

Both A and R are true and R is the correct explanation of A
Both A and R are true but R is not the correct explanation of A
A is true but R is false A is true but R is false
A is false but R is true A is false but R is true

Which of the following statements about RuBisCO is true? Which of the following statements about RuBisCO is true?

4 Mark(s)

It is active only in the dark. It is active only in the dark.
It has higher affinity of oxygen than carbon dioxide.
It is an enzyme involved in the photolysis of water.
It catalyzes the carboxylation of RuBP It catalyzes the carboxylation of RuBP

Which of the following statement is correct about location of the male frog copulatory pad? Which of the following statement is correct about location of the male frog copulatory pad?

4 Mark(s)

First and second digit of fore limb First and second digit of fore limb
First digit of hind limb First digit of hind limb
Second digit of fore limb Second digit of fore limb
First digit of fore limb First digit of fore limb

The output(Y) of the given logic implementation is similar to the output of an/a __________ gate.

4 Mark(s)

AND
NAND
OR
NOR

Which of the following is an example of a zygomorphic flower? Which of the following is an example of a zygomorphic flower?

4 Mark(s)

Petunia. Petunia.
Datura Datura
Pea Pea
Chilli Chilli

Twins are born to a family that lives next door to you. The twins are a boy and a girl. Which of the following must be true? Twins are born to a family that lives next door to you. The twins are a boy and a girl. Which of the following must be true?

4 Mark(s)

They are monozygotic twins. They are monozygotic twins.
They are fraternal twins. They are fraternal twins.
They were conceived through in vitro fertilization.
They have 75% identical genetic content.

Match List-I with List-IIList-I (Ion)A. Co²⁺B. Mg²⁺C. Pb²⁺D. Al³⁺List-II (Group Number in Cation Analysis)I. Group-III. Group-IIIIII. Group-IVIV. Group-VIChoose the correct answer from the option given below Match List-I with List-IIList-I (Ion)A. Co²⁺B. Mg²⁺C. Pb²⁺D. Al³⁺List-II (Group Number in Cation Analysis)I. Group-III. Group-IIIIII. Group-IVIV. Group-VIChoose the correct answer from the option given below

4 Mark(s)

A-III, B-IV, C-II, D-I A-III, B-IV, C-II, D-I
A-III, B-IV, C-I, D-II A-III, B-IV, C-I, D-II
A-III, B-II, C-IV, D-I A-III, B-II, C-IV, D-I
A-II, B-II, C-I, D-IV A-II, B-II, C-I, D-IV

Given below are two statements:Statement I: The DNA fragments extracted from gel electrophoresis can be used in construction of recombinant DNA.Statement II: Smaller size DNA fragments are observed near anode while larger fragments are found near the wells in an agarose gel.In the light of the above statements, choose the most appropriate answer from the options given below: Given below are two statements:Statement I: The DNA fragments extracted from gel electrophoresis can be used in construction of recombinant DNA.Statement II: Smaller size DNA fragments are observed near anode while larger fragments are found near the wells in an agarose gel.In the light of the above statements, choose the most appropriate answer from the options given below:

4 Mark(s)

Both statement I and statement II are correct
Both statement I and statement II are incorrect
Statement I is correct but statement II is incorrect
Statement I is incorrect but statement II is correct

Consider a water tank shown in the figure. It has one wall at x = L and can be taken to be very wide in the z direction. When filled with a liquid of surface tension S and density ρ , the liquid surface makes angle θ₀( θ₀ << 1) with the x-axis at x = L. If y(x) is the height of the surface then the equation for y(x) is:(take θ₀(x) = sin θ₀(x) = tan θ₀(x) = dy/dx, g is the acceleration due to gravity)

4 Mark(s)

dx2d2y=Sρgx
dx 2 d 2 y = S ρg y
dx 2 d 2 y = S ρg
dx dy = S ρg x

Given below are two statements :Statement-I: Benzenediazonium salt is prepared by the reaction of aniline with nitrous acid at 273-278 K. It decomposes easily in the dry state.Statement-II: Insertion of iodine into the benzene ring is difficult and hence iodobenzene is prepared through the reaction of benzenediazonium salt with KI. In the light of the above statements, choose the most appropriate answer from the options given below : Given below are two statements :Statement-I: Benzenediazonium salt is prepared by the reaction of aniline with nitrous acid at 273-278 K. It decomposes easily in the dry state.Statement-II: Insertion of iodine into the benzene ring is difficult and hence iodobenzene is prepared through the reaction of benzenediazonium salt with KI. In the light of the above statements, choose the most appropriate answer from the options given below :

4 Mark(s)

Both Statement I and Statement II are correct
Both Statement I and Statement II are incorrect
Statement I is correct but Statement II is incorrect
Statement I is incorrect but Statement II is correct

With the help of given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in F₃ generation.Original pedigree With the help of given pedigree, find out the probability for the birth of a child having no disease and being a carrier (has the disease mutation in one allele of the gene) in F₃ generation.Original pedigree

4 Mark(s)

46113 46113
46054 46054
46235 46235
Zero Zero

How many products (including stereoisomers) are expected from monochlorination of the following compound ?Original compound How many products (including stereoisomers) are expected from monochlorination of the following compound ?Original compound

4 Mark(s)

Given below are two statements:Statement-I: Fig fruit is a non-vegetarian fruit as it has enclosed fig wasps in it.Statement-II: Fig wasp and fig tree exhibit mutual relationship as fig wasp completes its life cycle in fig fruit and fig fruit gets pollinated by fig wasp.In the light of the above statements, choose the most appropriate answer from the options given below: Given below are two statements:Statement-I: Fig fruit is a non-vegetarian fruit as it has enclosed fig wasps in it.Statement-II: Fig wasp and fig tree exhibit mutual relationship as fig wasp completes its life cycle in fig fruit and fig fruit gets pollinated by fig wasp.In the light of the above statements, choose the most appropriate answer from the options given below:

4 Mark(s)

Both statement I and statement II are correct
Both statement I and statement II are incorrect
Statement I is correct but statement II is incorrect
Statement I is incorrect but statement II is correct

What are the potential drawbacks in adoption of the IVF method?A. High fatality risk to motherB. Expensive instruments and reagentsC. Husband/ wife necessary for being donorsD. Less adoption of orphansE. Not available in IndiaF. Possibility that the early embryo does not surviveChoose the correct answer from the options given below: What are the potential drawbacks in adoption of the IVF method?A. High fatality risk to motherB. Expensive instruments and reagentsC. Husband/ wife necessary for being donorsD. Less adoption of orphansE. Not available in IndiaF. Possibility that the early embryo does not surviveChoose the correct answer from the options given below:

4 Mark(s)

B, D, F only B, D, F only
A, C, D, F only A, C, D, F only
A, B, C, D only A, B, C, D only
A, B, C, E, F only A, B, C, E, F only

Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the human body? Which of the following type of immunity is present at the time of birth and is a non-specific type of defence in the human body?

4 Mark(s)

Acquired Immunity Acquired Immunity
Innate Immunity Innate Immunity
Cell-mediated Immunity Cell-mediated Immunity
Humoral Immunity Humoral Immunity

In bryophytes, the gemmae help in which one of the following? In bryophytes, the gemmae help in which one of the following?

4 Mark(s)

Sexual reproduction Sexual reproduction
Asexual reproduction Asexual reproduction
Nutrient absorption Nutrient absorption
Gaseous exchange Gaseous exchange

Which of the following is the unit of productivity of an ecosystem? Which of the following is the unit of productivity of an ecosystem?

4 Mark(s)

gm⁻² gm⁻²
KCal m⁻² KCal m⁻²
KCal m⁻³ KCal m⁻³
(KCal m⁻²) yr⁻¹ (KCal m⁻²) yr⁻¹

Which one of the following reactions does NOT belong to “Lassaigne’s test” ? Which one of the following reactions does NOT belong to “Lassaigne’s test” ?

4 Mark(s)

Na+C+N→ΔNaCN\mathrm{Na+C+N\xrightarrow{\Delta}NaCN}
2Na+S→ΔNa2S\mathrm{2Na+S\xrightarrow{\Delta}Na_2S}
Na+X→Δ+NaX\mathrm{Na+X\xrightarrow{\Delta}+NaX}
2CuO+C→Δ2Cu+CO2\mathrm{2CuO+C\xrightarrow{\Delta}2Cu+CO_2}

Identify the correct orders against the property mentioned(A) H₂O > NH₃ > CHCl₃ – dipole moment(B) XeF₄ > XeO₃ > XeF₂ – number of lone pairs on central atom(C) O–H > C–H > N–O – bond length(D) N₂ > O₂ > H₂ – bond enthalpyChoose the correct answer from the options given below: Identify the correct orders against the property mentioned(A) H₂O > NH₃ > CHCl₃ – dipole moment(B) XeF₄ > XeO₃ > XeF₂ – number of lone pairs on central atom(C) O–H > C–H > N–O – bond length(D) N₂ > O₂ > H₂ – bond enthalpyChoose the correct answer from the options given below:

4 Mark(s)

A, D only A, D only
B, D only B, D only
A, C only A, C only
B, C only B, C only

Who is known as the father of Ecology in India? Who is known as the father of Ecology in India?

4 Mark(s)

S.R. Kashyap S.R. Kashyap
Ramdeo Misra Ramdeo Misra
Ram Udar Ram Udar
Birbal Sahni Birbal Sahni

Given below are two statements:Statement-I: In a floral formula ⊕ stands for zygomorphic nature of the flower , and G‾\underline G stands for inferior ovary.Statement-II: In a floral Formula ⊕ stands for actinomorphic nature of the flower and G‾\underline G stands for superior ovary.In the light of the above statements, choose the most appropriate answer from the options given below: Given below are two statements:Statement-I: In a floral formula ⊕ stands for zygomorphic nature of the flower , and G‾\underline G stands for inferior ovary.Statement-II: In a floral Formula ⊕ stands for actinomorphic nature of the flower and G‾\underline G stands for superior ovary.In the light of the above statements, choose the most appropriate answer from the options given below:

4 Mark(s)

Both statement I and statement II are correct.
Both statement I and statement II are incorrect.
Statement I is correct but statement II is incorrect.
Statement I is incorrect but statement II is correct.

Which chromosome in the human genome has the highest number of genes? Which chromosome in the human genome has the highest number of genes?

4 Mark(s)

Chromosome X Chromosome X
Chromosome Y Chromosome Y
Chromosome 1 Chromosome 1
Chromosome 10 Chromosome 10

Which of the following hormones released from the pituitary is actually synthesized in the hypothalamus? Which of the following hormones released from the pituitary is actually synthesized in the hypothalamus?

4 Mark(s)

Luteinizing hormone (LH) Luteinizing hormone (LH)
Anti-diuretic hormone (ADH) Anti-diuretic hormone (ADH)
Follicle-stimulating hormone (FSH) Follicle-stimulating hormone (FSH)
Adrenocorticotrophic hormone (ACTH) Adrenocorticotrophic hormone (ACTH)

Which one of following is an example of ex-situ conservation? Which one of following is an example of ex-situ conservation?

4 Mark(s)

National park National park
Wildlife Sanctuary Wildlife Sanctuary
Zoos and botanical gardens Zoos and botanical gardens
Protected areas Protected areas

Frogs respire in water by skin and buccal cavity and on land by skin, buccal cavity and lungs. Choose the correct answer from the following: Frogs respire in water by skin and buccal cavity and on land by skin, buccal cavity and lungs. Choose the correct answer from the following:

4 Mark(s)

The statement is true for water but false for land
The statement is true for both the environment
The statement is false for water but true for land
The statement is false for both the environment

Match List-I with List-II.List-IA. XeO₃B. XeF₂C. XeOF₄D. XeF₆List-III. sp³d, linearII. sp³; pyramidalIII. sp³d³; distorted octahedralIV. sp³d²; square pyramidalChoose the correct answer from the options Match List-I with List-II.List-IA. XeO₃B. XeF₂C. XeOF₄D. XeF₆List-III. sp³d, linearII. sp³; pyramidalIII. sp³d³; distorted octahedralIV. sp³d²; square pyramidalChoose the correct answer from the options

4 Mark(s)

A-II, B-I, C-IV, D-III A-II, B-I, C-IV, D-III
A-II, B-I, C-III, D-IV A-II, B-I, C-III, D-IV
A-IV, B-II, C-III, D-I A-IV, B-II, C-III, D-I
A-IV, B-II, C-I, D-III A-IV, B-II, C-I, D-III

An electric dipole with dipole moment 5 × 10⁻⁶ Cm is aligned with the direction of a uniform electric field of magnitude 4 × 10⁵ N/C. The dipole is then rotated through an angle of 60° with respect to the electric field. The change in the potential energy of the dipole is : An electric dipole with dipole moment 5 × 10⁻⁶ Cm is aligned with the direction of a uniform electric field of magnitude 4 × 10⁵ N/C. The dipole is then rotated through an angle of 60° with respect to the electric field. The change in the potential energy of the dipole is :

4 Mark(s)

0.8 J 0.8 J
1.0 J 1.0 J
1.2 J 1.2 J
1.5 J 1.5 J

Original plasmidIn the above represented plasmid an alien piece of DNA is inserted at EcoRI site. Which of the following strategies will be chosen to select the recombinant colonies? Original plasmidIn the above represented plasmid an alien piece of DNA is inserted at EcoRI site. Which of the following strategies will be chosen to select the recombinant colonies?

4 Mark(s)

Using ampicillin & tetracyclin containing medium plate
Blue colour colonies will be selected Blue colour colonies will be selected
White colour colonies will be selected White colour colonies will be selected
Blue colour colonies grown on ampicillin plates can be selected

Match List-I with List-II.List-I(a) Alfred Hershey and Martha Chase(b) Euchromatin(c) Frederick Griffith(d) HeterochromatinList-II(i) Streptococcus pneumoniae(ii) Densely packed and dark- stained(iii) Loosely packed and light-stained(iv) DNA as genetic material confirmationChoose the correct answer from the options given below: Match List-I with List-II.List-I(a) Alfred Hershey and Martha Chase(b) Euchromatin(c) Frederick Griffith(d) HeterochromatinList-II(i) Streptococcus pneumoniae(ii) Densely packed and dark- stained(iii) Loosely packed and light-stained(iv) DNA as genetic material confirmationChoose the correct answer from the options given below:

4 Mark(s)

A-II, B-IV, C-I, D-III A-II, B-IV, C-I, D-III
A-IV, B-II, C-I, D-III A-IV, B-II, C-I, D-III
A-IV, B-III, C-I, D-II A-IV, B-III, C-I, D-II
A-III, B-II, C-IV, D-I A-III, B-II, C-IV, D-I

The correct order of the wavelength of light absorbed by the following complexes is:A. [Co(NH₃)₆]³⁺B. [Co(CN)₆]³⁻C. [Cu(H₂O)₄]²⁺D. [Ti(H₂O)₆]³⁺Choose the correct answer from the options given below: The correct order of the wavelength of light absorbed by the following complexes is:A. [Co(NH₃)₆]³⁺B. [Co(CN)₆]³⁻C. [Cu(H₂O)₄]²⁺D. [Ti(H₂O)₆]³⁺Choose the correct answer from the options given below:

4 Mark(s)

B < D < A < C B < D < A < C
B < A < D < C B < A < D < C
C < D < A < B C < D < A < B
C < A < D < B C < A < D < B

Out of the following complex compounds, which of the compound will be having the minimum conductance in solution? Out of the following complex compounds, which of the compound will be having the minimum conductance in solution?

4 Mark(s)

[Co(NH₃)₃ Cl₃] [Co(NH₃)₃ Cl₃]
[Co(NH₃)₄ Cl₂] [Co(NH₃)₄ Cl₂]
[Co (NH₃)₆]Cl₃ [Co (NH₃)₆]Cl₃
[Co (NH₃)₅ Cl]Cl [Co (NH₃)₅ Cl]Cl

Three identical heat conducting rods are connected in series as shown in the figure. The rods on the sides have thermal conductivity 2K while that in the middle has thermal conductivity K. The left end of the combination is maintained at temperature 3T and the right end at T. The rods are thermally insulated from outside. In steady state, temperature at the left junction is T₁ and that at the right junction is T₂. The ratio T1/T2 is

4 Mark(s)

1.5
1.3333333333333333
1.6666666666666667
1.25

Which of the following options represent the variation of photoelectric current with property of light shown on the x-axis? Which of the following options represent the variation of photoelectric current with property of light shown on the x-axis?

4 Mark(s)

A only A only
A and C A and C
A and D A and D
B and C B and C

Each of the following characteristics represent a Kingdom proposed by Whittaker. Arrange the following in increasing order of complexity of body organization.A. Multicellular heterotrophs with cell wall made of chitin.B. Heterotrophs with tissue/organ/organ system level of body organization.C. Prokaryotes with cell wall made of polysaccharides and amino acids.D. Eukaryotic autotrophs with tissue/organ level of body organization.E. Eukaryotes with cellular body organization.Choose the correct answer from the options given below: Each of the following characteristics represent a Kingdom proposed by Whittaker. Arrange the following in increasing order of complexity of body organization.A. Multicellular heterotrophs with cell wall made of chitin.B. Heterotrophs with tissue/organ/organ system level of body organization.C. Prokaryotes with cell wall made of polysaccharides and amino acids.D. Eukaryotic autotrophs with tissue/organ level of body organization.E. Eukaryotes with cellular body organization.Choose the correct answer from the options given below:

4 Mark(s)

A, C, E, B, D A, C, E, B, D
C, E, A, D, B C, E, A, D, B
A, C, E, D, B A, C, E, D, B
C, E, A, B, D C, E, A, B, D

A bob of heavy mass m is suspended by a light string of length l. The bob is given a horizontal velocity v₀ as shown in figure. If the string gets slack at some point P making an angle θ from the horizontal, the ratio of the speed of the bob at point P to its initial speed v₀ is:

4 Mark(s)

(sin⁡θ)12(
(12+3sin⁡θ)12\left(\frac{1}{2+3\sin\theta}\right)^{\frac12}
(cos⁡θ2+3sin⁡θ)12\left(\frac{\cos\theta}{2+3\sin\theta}\right)^{\frac12}
(sin⁡θ2+3sin⁡θ)12\left(\frac{\sin\theta}{2+3\sin\theta}\right)^{\frac12}

Which among the following electronic configurations belong to main group elements?A. [Ne] 3s¹B. [Ar] 3d⁸4s²C. [Kr] 4d¹⁰5s²5p⁵D. [Ar] 3d¹⁰4s¹E. [Rn] 5f⁰6d²7s²Choose the correct answer from the option given below: Which among the following electronic configurations belong to main group elements?A. [Ne] 3s¹B. [Ar] 3d⁸4s²C. [Kr] 4d¹⁰5s²5p⁵D. [Ar] 3d¹⁰4s¹E. [Rn] 5f⁰6d²7s²Choose the correct answer from the option given below:

4 Mark(s)

B and E only B and E only
A and C only A and C only
D and E only D and E only
A, C and D only A, C and D only

De-Broglie wavelength of an electron orbiting in the n = 2 state of hydrogen atom is close to (Given Bohr radius = 0.052 nm) De-Broglie wavelength of an electron orbiting in the n = 2 state of hydrogen atom is close to (Given Bohr radius = 0.052 nm)

4 Mark(s)

0.067 nm 0.067 nm
0.67 nm 0.67 nm
1.67 nm 1.67 nm
2.67 nm 2.67 nm

Dalton’s Atomic theory could not explain which of the following ? Dalton’s Atomic theory could not explain which of the following ?

4 Mark(s)

Law of conservation of mass Law of conservation of mass
Law of constant proportion Law of constant proportion
Law of multiple proportion Law of multiple proportion
Law of gaseous volume Law of gaseous volume

Match List-I with List-II.List-I (Example)A. HumidityB. AlloysC. AmalgamsD. SmokeList-II (Type of Solution)I. Solid in solidII. Liquid in gasIII. Solid in gasIV. Liquid in solidChoose the correct answer from the options given below Match List-I with List-II.List-I (Example)A. HumidityB. AlloysC. AmalgamsD. SmokeList-II (Type of Solution)I. Solid in solidII. Liquid in gasIII. Solid in gasIV. Liquid in solidChoose the correct answer from the options given below

4 Mark(s)

A-II, B-IV, C-I, D-III A-II, B-IV, C-I, D-III
A-II, B-I, C-IV, D-III A-II, B-I, C-IV, D-III
A-III, B-I, C-IV, D-II A-III, B-I, C-IV, D-II
A-III, B-II, C-I, D-IV A-III, B-II, C-I, D-IV

Histones are enriched with Histones are enriched with

4 Mark(s)

Lysine & Arginine Lysine & Arginine
Leucine & Lysine Leucine & Lysine
Phenylalanine & Leucine Phenylalanine & Leucine
Phenylalanine & Arginine Phenylalanine & Arginine

A constant voltage of 50 V is maintained between the points A and B of the circuit shown in the figure. The current through the branch CD of the circuit is :-

4 Mark(s)

1.5 A
2.0 A
2.5 A
3.0 A

Energy and radius of first Bohr orbit of He² and Li²⁺ are[Given R_H = 2.18 × 10⁻¹⁸ J, a₀ = 52.9 pm] Energy and radius of first Bohr orbit of He² and Li²⁺ are[Given R_H = 2.18 × 10⁻¹⁸ J, a₀ = 52.9 pm]

4 Mark(s)

Eₙ(Li²⁺) = −19.62 × 10⁻¹⁸ J;rₙ(Li²⁺) = 17.6 pmEₙ(He⁺) = −8.72 × 10⁻¹⁸ J;rₙ(He⁺) = 26.4 pm
Eₙ(Li²⁺) = −8.72 × 10⁻¹⁸ J;rₙ(Li²⁺) = 26.4 pmEₙ(He⁺) = −19.62 × 10⁻¹⁸ J;rₙ(He⁺) = 17.6 pm
Eₙ(Li²⁺) = −19.62 × 10⁻¹⁶ J;rₙ(Li²⁺) = 17.6 pmEₙ(He⁺) = −8.72 × 10⁻¹⁶ J;rₙ(He⁺) = 26.4 pm
Eₙ(Li²⁺) = −8.72 × 10⁻¹⁶ J;rₙ(Li²⁺) = 17.6 pmEₙ(He⁺) = −19.62 × 10⁻¹⁶ J;rₙ(He⁺) = 17.6 pm

A specialised membranous structure in a prokaryotic cell which helps in cell wall formation, DNA replication and respiration is: A specialised membranous structure in a prokaryotic cell which helps in cell wall formation, DNA replication and respiration is:

4 Mark(s)

Mesosome Mesosome
Chromatophores Chromatophores
Cristae Cristae
Endoplasmic Reticulum Endoplasmic Reticulum

In the seeds of cereals, the outer covering of endosperm separates the embryo by a protein-rich layer called: In the seeds of cereals, the outer covering of endosperm separates the embryo by a protein-rich layer called:

4 Mark(s)

Coleoptile Coleoptile
Coleorhiza Coleorhiza
Integument Integument
Aleurone Layer Aleurone Layer

Read the following statements on plant growth and development.A. Parthenocarpy can be induced by auxins.B. Plant growth regulators can be involved in promotion as well as inhibition of growth.C. Dedifferentiation is a pre-requisite for re-differentiation.D. Abscisic acid is a plant growth promoter.E. Apical dominance promotes the growth of lateral buds.Choose the option with all correct statements. Read the following statements on plant growth and development.A. Parthenocarpy can be induced by auxins.B. Plant growth regulators can be involved in promotion as well as inhibition of growth.C. Dedifferentiation is a pre-requisite for re-differentiation.D. Abscisic acid is a plant growth promoter.E. Apical dominance promotes the growth of lateral buds.Choose the option with all correct statements.

4 Mark(s)

A, B, C only A, B, C only
A, C, E only A, C, E only
A, D, E only A, D, E only
B, D, E only B, D, E only

Why can’t insulin be given orally to diabetic patients? Why can’t insulin be given orally to diabetic patients?

4 Mark(s)

Human body will elicit strong immune response
It will be digested in Gastro-Intestinal (GI) tract
Because of structural variation Because of structural variation
Its bioavailability will be increased Its bioavailability will be increased

Name the class of enzyme that usually catalyze the following reaction:S-G+S#→S+S#-GS\text{-}G+S^\#\rightarrow S+S^\#\text{-}GWhere, G → a group other than hydrogenS → a substrateS#S^\# → another substrate Name the class of enzyme that usually catalyze the following reaction:S-G+S#→S+S#-GS\text{-}G+S^\#\rightarrow S+S^\#\text{-}GWhere, G → a group other than hydrogenS → a substrateS#S^\# → another substrate

4 Mark(s)

Hydrolase Hydrolase
Lyase Lyase
Transferase Transferase
Ligase Ligase

Which of the following statements are true?A. Unlike Ga that has a very high melting point, Cs has a very low melting point.B. On Pauling scale, the electronegativity values of N and Cl are not the same.C. Ar, K⁺, Cl⁻, Ca²⁺ and S²⁻ are all isoelectronic species.D. The correct order of the first ionization enthalpies of Na, Mg, Al, and Si is Si > Al > Mg > Na.E. The atomic radius of Cs is greater than that of Li and Rb.Choose the correct answer from the options given below: Which of the following statements are true?A. Unlike Ga that has a very high melting point, Cs has a very low melting point.B. On Pauling scale, the electronegativity values of N and Cl are not the same.C. Ar, K⁺, Cl⁻, Ca²⁺ and S²⁻ are all isoelectronic species.D. The correct order of the first ionization enthalpies of Na, Mg, Al, and Si is Si > Al > Mg > Na.E. The atomic radius of Cs is greater than that of Li and Rb.Choose the correct answer from the options given below:

4 Mark(s)

A, B and E only A, B and E only
C and E only C and E only
C and D only C and D only
A, C and E only A, C and E only

A sphere of radius R is cut from a larger solid sphere of radius 2R as shown in the figure. The ratio of the moment of inertia of the smaller sphere to that of the rest part of the sphere about the Y-axis is :

4 Mark(s)

0.875
0.175
0.12280701754385964
0.109375

Streptokinase produced by bacterium Streptococcus is used for Streptokinase produced by bacterium Streptococcus is used for

4 Mark(s)

Curd production Curd production
Ethanol production Ethanol production
Liver disease treatment Liver disease treatment
Removing clots from blood vessels Removing clots from blood vessels

A physical quantity P is related to four observations a, b, c and d as follows :P=a3b2cdP=\frac{a^3b^2}{c\sqrt d}The percentage errors of measurement in a, b, c and d are 1%, 3%, 2% and 4% respectively. The percentage error in the quantity P is A physical quantity P is related to four observations a, b, c and d as follows :P=a3b2cdP=\frac{a^3b^2}{c\sqrt d}The percentage errors of measurement in a, b, c and d are 1%, 3%, 2% and 4% respectively. The percentage error in the quantity P is

4 Mark(s)

0.1 0.1
0.02 0.02
0.13 0.13
0.15 0.15

A microscope has an objective of focal length 2 cm, eyepiece of focal length 4 cm and the tube length of 40 cm. If the distance of distinct vision of eye is 25 cm, the magnification in the microscope is: A microscope has an objective of focal length 2 cm, eyepiece of focal length 4 cm and the tube length of 40 cm. If the distance of distinct vision of eye is 25 cm, the magnification in the microscope is:

4 Mark(s)

100 100
125 125
150 150
250 250

Which of following organisms cannot fix nitrogen?A. AzotobacterB. OscillatoriaC. AnabaenaD. VolvoxE. NostocChoose the correct answer from the options given below: Which of following organisms cannot fix nitrogen?A. AzotobacterB. OscillatoriaC. AnabaenaD. VolvoxE. NostocChoose the correct answer from the options given below:

4 Mark(s)

A only A only
D only D only
B only B only
E only E only

A container has two chambers of volumes V₁ = 2 litres and V₂ = 3 litres separated by a partition made of a thermal insulator. The chambers contains n₁ = 5 and n₂ = 4 moles of ideal gas at pressures p₁ = 1 atm and p₂ = 2 atm, respectively. When the partition is removed, the mixture attains an equilibrium pressure of : A container has two chambers of volumes V₁ = 2 litres and V₂ = 3 litres separated by a partition made of a thermal insulator. The chambers contains n₁ = 5 and n₂ = 4 moles of ideal gas at pressures p₁ = 1 atm and p₂ = 2 atm, respectively. When the partition is removed, the mixture attains an equilibrium pressure of :

4 Mark(s)

1.3 atm 1.3 atm
1.6 atm 1.6 atm
1.4 atm 1.4 atm
1.8 atm 1.8 atm

Match List I with List - II.List-IA. HeartB. KidneyC. Gastro-intestinal tractD. Adrenal CortexList-III. ErythropoietinII. AldosteroneIII. Atrial natriuretic factorIV. SecretinChoose the correct answer from the options given below: Match List I with List - II.List-IA. HeartB. KidneyC. Gastro-intestinal tractD. Adrenal CortexList-III. ErythropoietinII. AldosteroneIII. Atrial natriuretic factorIV. SecretinChoose the correct answer from the options given below:

4 Mark(s)

A-II, B-I, C-III, D-IV A-II, B-I, C-III, D-IV
A IV, B-III,C-II, D-I A IV, B-III,C-II, D-I
A I, B-III, C-IV, D-II A I, B-III, C-IV, D-II
A-III, B-I, C-IV, D-II A-III, B-I, C-IV, D-II

C(s) + 2H₂(g) → CH₄(g); ΔH = −74.8 kJ mol⁻¹Which of the following diagrams gives an accurate representation of the above reaction?[R → reactants; P → products] C(s) + 2H₂(g) → CH₄(g); ΔH = −74.8 kJ mol⁻¹Which of the following diagrams gives an accurate representation of the above reaction?[R → reactants; P → products]

4 Mark(s)

(a) Original graph below (a) Original graph below
(b) Original graph below (b) Original graph below
(c) Original graph below (c) Original graph below
(d) Original graph below (d) Original graph below

From the statements given below choose the correct option:A. The eukaryotic ribosomes are 80S and prokaryotic ribosomes are70SB. Each ribosome has two sub-units.C. The two sub-units of 80S ribosome are 60S and 40S while that of 70S are 50S and 30S.D. The two sub-units of 80S ribosome are 60S and 20S and that of 70S are 50S and 20S.E. The two sub-units of 80S ribosome are 60S and 30S and that of 70S are 50S and 30S From the statements given below choose the correct option:A. The eukaryotic ribosomes are 80S and prokaryotic ribosomes are70SB. Each ribosome has two sub-units.C. The two sub-units of 80S ribosome are 60S and 40S while that of 70S are 50S and 30S.D. The two sub-units of 80S ribosome are 60S and 20S and that of 70S are 50S and 20S.E. The two sub-units of 80S ribosome are 60S and 30S and that of 70S are 50S and 30S

4 Mark(s)

A, B, C are true A, B, C are true
A, B, D, are true A, B, D, are true
A, B, E are true A, B, E are true
B, D, E are true B, D, E are true

Total number of possible isomers (both structural as well as stereoisomers) of cyclic ethers of molecular formula C₄H₈O is : Total number of possible isomers (both structural as well as stereoisomers) of cyclic ethers of molecular formula C₄H₈O is :

4 Mark(s)

6 6
8 8
10 10
11 11

There are two inclined surface of equal length (L) and same angle of inclination 45° with the horizontal. One of them is rough and the other is perfectly smooth. A given body takes 2 times as much time to slide down on rough surface than on the smooth surface. The coefficient of kinetic friction ( μₖ) between the object and the rough surface is close to: There are two inclined surface of equal length (L) and same angle of inclination 45° with the horizontal. One of them is rough and the other is perfectly smooth. A given body takes 2 times as much time to slide down on rough surface than on the smooth surface. The coefficient of kinetic friction ( μₖ) between the object and the rough surface is close to:

4 Mark(s)

0.25 0.25
0.4 0.4
0.5 0.5
0.75 0.75

Two cities X and Y are connected by a regular bus service with a bus leaving in either direction every T min. A girl is driving scooty with a speed of 60 km/h in the direction X to Y notices that a bus goes past her every 30 minutes in the direction of her motion, and every 10 minutes in the opposite direction. Choose the correct option for the period T of the bus service and the speed (assumed constant) of the buses. Two cities X and Y are connected by a regular bus service with a bus leaving in either direction every T min. A girl is driving scooty with a speed of 60 km/h in the direction X to Y notices that a bus goes past her every 30 minutes in the direction of her motion, and every 10 minutes in the opposite direction. Choose the correct option for the period T of the bus service and the speed (assumed constant) of the buses.

4 Mark(s)

9 min, 40 km/h 9 min, 40 km/h
25 min, 100 km/h 25 min, 100 km/h
10 min, 90 km/h 10 min, 90 km/h
15 min, 120 km/h 15 min, 120 km/h

Among the given compound I-III, the correct order of bond dissociation energy of C-H bond marked with * is :Original structures Among the given compound I-III, the correct order of bond dissociation energy of C-H bond marked with * is :Original structures

4 Mark(s)

II > I > III II > I > III
I > II > III I > II > III
III > II > I III > II > I
II > III > I II > III > I

Identify the suitable reagent for the following conversionOriginal conversion Identify the suitable reagent for the following conversionOriginal conversion

4 Mark(s)

(i) LiAlH₄,(ii) H+H2O\frac{\mathrm H^+}{\mathrm H_2O}
(i) AlH(iBu)₂(ii) H₂O (i) AlH(iBu)₂(ii) H₂O
(i) NaBH₄,(ii) H+H2O\frac{\mathrm H^+}{\mathrm H_2O}
H2Pd−BaSO4\frac{\mathrm H_2}{\mathrm{Pd-BaSO_4}}

Which one of the following compounds can exist as cis-trans isomers ? Which one of the following compounds can exist as cis-trans isomers ?

4 Mark(s)

Pent-1-ene Pent-1-ene
2-Methylhex-2-ene 2-Methylhex-2-ene
1, 1-Dimethylcyclopropane 1, 1-Dimethylcyclopropane
1, 2-Dimethylcyclohexane 1, 2-Dimethylcyclohexane

A wire of resistance R is cut into 8 equal pieces. From these pieces two equivalent resistances are made by adding four of these together in parallel. Then these two sets are added in series. The net effective resistance of the combination is : A wire of resistance R is cut into 8 equal pieces. From these pieces two equivalent resistances are made by adding four of these together in parallel. Then these two sets are added in series. The net effective resistance of the combination is :

4 Mark(s)

R64\frac{R}{64} R64\frac{R}{64}
R32\frac{R}{32} R32\frac{R}{32}
R16\frac{R}{16} R16\frac{R}{16}
R8\frac{R}{8} R8\frac{R}{8}

Given below are two statements:Statement-I: Transfer RNAs and ribosomal RNA do not interact with mRNA.Statement-II: RNA interference (RNAi) takes place in all eukaryotic organisms as a method of cellular defence. In the light of the above statements, choose the most appropriate answer from the options given below: Given below are two statements:Statement-I: Transfer RNAs and ribosomal RNA do not interact with mRNA.Statement-II: RNA interference (RNAi) takes place in all eukaryotic organisms as a method of cellular defence. In the light of the above statements, choose the most appropriate answer from the options given below:

4 Mark(s)

Both statement I and statement II are correct.
Both statement I and statement II are incorrect.
Statement I is correct but statement II is incorrect.
Statement I is incorrect but statement II is correct.

Match List-I with List-II.List-I(a) Adenosine(b) Adenylic acid(c) Adenine(d) AlanineList-II(i) Nitrogen base(ii) Nucleotide(iii) Nucleoside(iv) Amino acidChoose the option with all correct matches: Match List-I with List-II.List-I(a) Adenosine(b) Adenylic acid(c) Adenine(d) AlanineList-II(i) Nitrogen base(ii) Nucleotide(iii) Nucleoside(iv) Amino acidChoose the option with all correct matches:

4 Mark(s)

A-III, B-IV, C-II, D-I A-III, B-IV, C-II, D-I
A-III, B-II, C-IV, D-I A-III, B-II, C-IV, D-I
A-III, B-II, C-I, D-IV A-III, B-II, C-I, D-IV
A-II, B-III, C-I, D-IV A-II, B-III, C-I, D-IV

While trying to find out the characteristics of a newly found animal, a researcher did the histology of adult animal and observed a cavity with presence of mesodermal tissue towards the body wall but no mesodermal tissue was observed towards the alimentary canal. What could be the possible coelom of that animal? While trying to find out the characteristics of a newly found animal, a researcher did the histology of adult animal and observed a cavity with presence of mesodermal tissue towards the body wall but no mesodermal tissue was observed towards the alimentary canal. What could be the possible coelom of that animal?

4 Mark(s)

Acoelomate Acoelomate
Pseudocoelomate Pseudocoelomate
Schizocoelomate Schizocoelomate
Spongocoelomate Spongocoelomate

In frog, the renal portal system is a special venous connection that acts to link: In frog, the renal portal system is a special venous connection that acts to link:

4 Mark(s)

Liver and intestine Liver and intestine
Liver and kidney Liver and kidney
Kidney and intestine Kidney and intestine
Kidney and lower part of body Kidney and lower part of body

The current passing through the battery in the given circuit, is:

4 Mark(s)

2.0 A
0.5 A
2.5 A
1.5 A

An electron [mass 9 × 10⁻³¹ kg and charge 1.6 × 10⁻¹⁹ C] moving with speed [c/100] [c = speed of light] is injected into a magnetic field B⃗\vec B of magnitude 9 × 10⁻⁴ T perpendicular to its direction of motion. We wish to apply an uniform electric field E⃗\vec E together with the magnetic field so that the electron does not deflect from its path. Then [speed of light c = 3 × 10⁸ ms⁻¹]

4 Mark(s)

E is perpendicular to B and its magnitude is 27 × 10⁴ Vm⁻¹
E is perpendicular to B and its magnitude is 27 × 10² Vm⁻¹
E is parallel to B and its magnitude is 27 × 10² Vm⁻¹
E is parallel to B and its magnitude is 27 × 10⁴ Vm⁻¹

Which one of the following reactions does NOT give benzene as the product? Which one of the following reactions does NOT give benzene as the product?

4 Mark(s)

(a) Original reaction below (a) Original reaction below
(b) Original reaction below (b) Original reaction below
(c) Original reaction below (c) Original reaction below
(d) Original reaction below (d) Original reaction below

What is the main function of the spindle fibers during mitosis? What is the main function of the spindle fibers during mitosis?

4 Mark(s)

To separate the chromosomes To separate the chromosomes
To synthesize new DNA To synthesize new DNA
To repair damaged DNA To repair damaged DNA
To regulate cell growth To regulate cell growth

After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s) / tissue(s) like:A. thymusB. bone marrowC. spleenD. lymph nodesE. Peyer’s patchesChoose the correct answer from the options given below: After maturation, in primary lymphoid organs, the lymphocytes migrate for interaction with antigens to secondary lymphoid organ(s) / tissue(s) like:A. thymusB. bone marrowC. spleenD. lymph nodesE. Peyer’s patchesChoose the correct answer from the options given below:

4 Mark(s)

B, C, D only B, C, D only
A, B, C only A, B, C only
E, A, B only E, A, B only
C, D, E. only C, D, E. only

The correct order of decreasing basic strength of the given amines is : The correct order of decreasing basic strength of the given amines is :

4 Mark(s)

N-methylaniline > benzenamine > ethanamine > N-ethylethanamine
N-ethylethanamine > ethanamine > benzenamine > N-methylaniline
N-ethylethanamine > ethanamine > N-methylaniline > benzenamine
benzenamine > ethanamine > N-methylaniline > N-ethylethanamine

Match List-I with List-II.List-I(a) Emphysema(b) Angina Pectoris(c) Glomerulo-nephritis(d) TetanyList-II(i) Rapid spasms in muscle due to low Ca⁺⁺ in body fluid(ii) Damaged alveolar walls and decreased respiratory surface(iii) Acute chest pain when not enough oxygen is reaching to heart muscle(iv) Inflammation of glomeruli of kidneyChoose the correct answer from the options given below: Match List-I with List-II.List-I(a) Emphysema(b) Angina Pectoris(c) Glomerulo-nephritis(d) TetanyList-II(i) Rapid spasms in muscle due to low Ca⁺⁺ in body fluid(ii) Damaged alveolar walls and decreased respiratory surface(iii) Acute chest pain when not enough oxygen is reaching to heart muscle(iv) Inflammation of glomeruli of kidneyChoose the correct answer from the options given below:

4 Mark(s)

A-III, B-I, C-IV, D-II A-III, B-I, C-IV, D-II
A-III, B-I, C-II, D-IV A-III, B-I, C-II, D-IV
A-II, B-IV, C-III, D-I A-II, B-IV, C-III, D-I
A-II, B-III, C-IV, D-I A-II, B-III, C-IV, D-I

5 moles of liquid X and 10 moles of liquid Y make a solution having a vapour pressure of 70 torr. The vapour pressures of pure X and Y are 63 torr and 78 torr respectively. Which of the following is true regarding the described solution ? 5 moles of liquid X and 10 moles of liquid Y make a solution having a vapour pressure of 70 torr. The vapour pressures of pure X and Y are 63 torr and 78 torr respectively. Which of the following is true regarding the described solution ?

4 Mark(s)

The solution shows positive deviation. The solution shows positive deviation.
The solution shows negative deviation. The solution shows negative deviation.
The solution is ideal. The solution is ideal.
The solution has volume greater than the sum of individual volumes.

Which of the following are paramagnetic?A. [NiCl₄]²⁻B. Ni(CO)₄C. [Ni(CN)₄]²⁻D. [Ni(H₂O)₆]²⁺E. Ni(PPh₃)₄Choose the correct answer from the options given below: Which of the following are paramagnetic?A. [NiCl₄]²⁻B. Ni(CO)₄C. [Ni(CN)₄]²⁻D. [Ni(H₂O)₆]²⁺E. Ni(PPh₃)₄Choose the correct answer from the options given below:

4 Mark(s)

A and C only A and C only
B and E only B and E only
A and D only A and D only
A, D and E only A, D and E only

What is the pattern of inheritance for polygenic trait? What is the pattern of inheritance for polygenic trait?

4 Mark(s)

Mendelian inheritance pattern Mendelian inheritance pattern
Non-mendelian inheritance pattern Non-mendelian inheritance pattern
Autosomal dominant inheritance pattern Autosomal dominant inheritance pattern
X-linked recessive inheritance pattern X-linked recessive inheritance pattern

Phosphoric acid ionizes in three steps with their ionization constant valuesKₐ₁, Kₐ₂ and Kₐ₃ , respectively.While K is the overall ionization constant.Which of the following statements are true ?A. log K = log Kₐ₁ + log Kₐ₂ + log Kₐ₃B. H₃PO₄ is a stronger acid than H₂PO₄⁻ and HPO₄²⁻C. Kₐ₁ > Kₐ₂ > Kₐ₃D. Ka1=Ka3+Ka22K_{a_1}=\frac{K_{a_3}+K_{a_2}}2Choose the correct answer from the options given below: Phosphoric acid ionizes in three steps with their ionization constant valuesKₐ₁, Kₐ₂ and Kₐ₃ , respectively.While K is the overall ionization constant.Which of the following statements are true ?A. log K = log Kₐ₁ + log Kₐ₂ + log Kₐ₃B. H₃PO₄ is a stronger acid than H₂PO₄⁻ and HPO₄²⁻C. Kₐ₁ > Kₐ₂ > Kₐ₃D. Ka1=Ka3+Ka22K_{a_1}=\frac{K_{a_3}+K_{a_2}}2Choose the correct answer from the options given below:

4 Mark(s)

A and B only A and B only
A and C only A and C only
B, C and D only B, C and D only
A, B and C only A, B and C only

The ratio of the wavelengths of the light absorbed by a Hydrogen atom when it undergoes n = 2 → n = 3 and n = 4 → n = 6 transitions, respectively, is The ratio of the wavelengths of the light absorbed by a Hydrogen atom when it undergoes n = 2 → n = 3 and n = 4 → n = 6 transitions, respectively, is

4 Mark(s)

136\frac1{36} 136\frac1{36}
116\frac1{16} 116\frac1{16}
19\frac19 19\frac19
14\frac14 14\frac14

An unpolarized light beam travelling in air is incident on a medium of refractive index 1.73 at Brewster’s angle. Then - An unpolarized light beam travelling in air is incident on a medium of refractive index 1.73 at Brewster’s angle. Then -

4 Mark(s)

reflected light is completely polarized and the angle of reflection is close to 60°
reflected light is partially polarized and the angle of reflection is close to 30°
both reflected and transmitted light are perfectly polarized with angles of reflection and refraction close to 60° and 30°, respectively
transmitted light is completely polarized with angle of refraction close to 30°

For the reaction A(g) ⇌ 2B(g), the backward reaction rate constant is higher than the forward reaction rate constant by a factor of 2500, at 1000 K.[Given : R = 0.0831 L atm mol⁻¹ K⁻¹]Kₚ for the reaction at 1000 K is For the reaction A(g) ⇌ 2B(g), the backward reaction rate constant is higher than the forward reaction rate constant by a factor of 2500, at 1000 K.[Given : R = 0.0831 L atm mol⁻¹ K⁻¹]Kₚ for the reaction at 1000 K is

4 Mark(s)

83.1 83.1
2.077 × 10⁵ 2.077 × 10⁵
0.033 0.033
0.021 0.021

In an oscillating spring mass system, a spring is connected to a box filled with sand. As the box oscillates, sand leaks slowly out of the box vertically so that the average frequency ω(t) and average amplitude A(t) of the system change with time t. Which of the following options schematically depicts these changes correctly?

4 Mark(s)

(a) Original graph below
(b) Original graph below
(c) Original graph below
(d) Original graph below

Which one of the following equations represents the Verhulst-Pearl Logistic Growth of population? Which one of the following equations represents the Verhulst-Pearl Logistic Growth of population?

4 Mark(s)

dNdt=r(K−NK)\frac{dN}{dt}=r\left(\frac{K-N}{K}\right)
dNdt=rN(K−NK)\frac{dN}{dt}=rN\left(\frac{K-N}{K}\right)
dNdt=rN(N−KN)\frac{dN}{dt}=rN\left(\frac{N-K}{N}\right)
dNdt=N(r−KK)\frac{dN}{dt}=N\left(\frac{r-K}{K}\right)

Which of the following aqueous solution will exhibit highest boiling point? Which of the following aqueous solution will exhibit highest boiling point?

4 Mark(s)

0.01 M Urea 0.01 M Urea
0.01 M KNO₃ 0.01 M KNO₃
0.01 M Na₂SO₄ 0.01 M Na₂SO₄
0.015 M C₆H₁₂O₆ 0.015 M C₆H₁₂O₆

Two identical point masses P and Q, suspended from two separate massless springs of spring constants k₁ and k₂, respectively, oscillate vertically. If their maximum speeds are the same, the ratio (AQAP)\left(\frac{A_Q}{A_P}\right) of the amplitude A_Q of mass Q to the amplitude A_P of mass P is : Two identical point masses P and Q, suspended from two separate massless springs of spring constants k₁ and k₂, respectively, oscillate vertically. If their maximum speeds are the same, the ratio (AQAP)\left(\frac{A_Q}{A_P}\right) of the amplitude A_Q of mass Q to the amplitude A_P of mass P is :

4 Mark(s)

k2k1\frac{k_2}{k_1} k2k1\frac{k_2}{k_1}
k1k2\frac{k_1}{k_2} k1k2\frac{k_1}{k_2}
k2k1\sqrt{\frac{k_2}{k_1}} k2k1\sqrt{\frac{k_2}{k_1}}
k1k2\sqrt{\frac{k_1}{k_2}} k1k2\sqrt{\frac{k_1}{k_2}}

Match List-I with List-II.List-I(a) Centromere(b) Cilium(c) Cristae(d) Cell membraneList-II(i) Mitochondrion(ii) Cell division(iii) Cell movement(iv) Phospholipid BilayerChoose the correct answer from the options given below: Match List-I with List-II.List-I(a) Centromere(b) Cilium(c) Cristae(d) Cell membraneList-II(i) Mitochondrion(ii) Cell division(iii) Cell movement(iv) Phospholipid BilayerChoose the correct answer from the options given below:

4 Mark(s)

A-I, B-II, C-III, D-IV A-I, B-II, C-III, D-IV
A-II, B-I, C-IV, D-III A-II, B-I, C-IV, D-III
A-IV, B-II, C-III, D-I A-IV, B-II, C-III, D-I
A-II, B-III, C-I, D-IV A-II, B-III, C-I, D-IV

Which of the following is an example of non-distilled alcoholic beverage produced by yeast? Which of the following is an example of non-distilled alcoholic beverage produced by yeast?

4 Mark(s)

Whisky Whisky
Brandy Brandy
Beer Beer
Rum Rum

Identify the part of a bio-reactor which is used as a foam braker from the given figureOriginal bioreactor diagram Identify the part of a bio-reactor which is used as a foam braker from the given figureOriginal bioreactor diagram

4 Mark(s)

Given below are two statements: Assertion(A) and the other is labelled as Reason (R).Assertion(A): Both wind and water pollinated flowers are not very colourful and do not produce nectar.Reason (R): The flowers produce enormous amount of pollen grains in wind and water pollinated flowers.In the light of the above statements, choose the correct answer from the options given below: Given below are two statements: Assertion(A) and the other is labelled as Reason (R).Assertion(A): Both wind and water pollinated flowers are not very colourful and do not produce nectar.Reason (R): The flowers produce enormous amount of pollen grains in wind and water pollinated flowers.In the light of the above statements, choose the correct answer from the options given below:

4 Mark(s)

Both A and R are true and R is the correct explanation of A.
Both A and R are true and R is NOT the correct explanation of A.
A is true but R is false. A is true but R is false.
A is false but R is true. A is false but R is true.

Epiphytes that are growing on a mango branch is an example of which of the following? Epiphytes that are growing on a mango branch is an example of which of the following?

4 Mark(s)

Commensalism Commensalism
Mutualism Mutualism
Predation Predation
Amensalism Amensalism

A ball of mass 0.5 kg is dropped from a height of 40 m. The ball hits the ground and rises to a height of 10 m. The impulse imparted to the ball during its collision with the ground is (Take g = 9.8 m/s²) A ball of mass 0.5 kg is dropped from a height of 40 m. The ball hits the ground and rises to a height of 10 m. The impulse imparted to the ball during its collision with the ground is (Take g = 9.8 m/s²)

4 Mark(s)

21 NS 21 NS
7 NS 7 NS
0 0
84 NS 84 NS

Match List-I with List-II.List-IA. Haber processB. Wacker oxidationC. Wilkinson catalystD. Ziegler catalystList-III. Fe catalystII. PdCl₂III. [(PPh₃)₃RhCl]IV. TiCl₄ with Al (CH₃)₃Choose the correct answer from the options given below: Match List-I with List-II.List-IA. Haber processB. Wacker oxidationC. Wilkinson catalystD. Ziegler catalystList-III. Fe catalystII. PdCl₂III. [(PPh₃)₃RhCl]IV. TiCl₄ with Al (CH₃)₃Choose the correct answer from the options given below:

4 Mark(s)

A-I, B-II, C-IV, D-III A-I, B-II, C-IV, D-III
A-II, B-III, C-I, D-IV A-II, B-III, C-I, D-IV
A-I, B-II, C-III, D-IV A-I, B-II, C-III, D-IV
A-I, B-IV, C-III, D-II A-I, B-IV, C-III, D-II

The first menstruation is called: The first menstruation is called:

4 Mark(s)

Menopause Menopause
Menarche Menarche
Diapause Diapause
Ovulation Ovulation

If the half-life (t₁/₂) for a first order reaction is 1 minutes, then the time required for 99.9% completion of the reaction is closest to: If the half-life (t₁/₂) for a first order reaction is 1 minutes, then the time required for 99.9% completion of the reaction is closest to:

4 Mark(s)

2 minutes 2 minutes
4 minutes 4 minutes
5 minutes 5 minutes
10 minutes 10 minutes

Consider the following statements regarding function of adrenal medullary hormones:A. It causes pupillary constrictionB. It is a hyperglycemic hormoneC. It causes piloerectionD. It increases strength of heart contractionChoose the correct answer from the options/ given below: Consider the following statements regarding function of adrenal medullary hormones:A. It causes pupillary constrictionB. It is a hyperglycemic hormoneC. It causes piloerectionD. It increases strength of heart contractionChoose the correct answer from the options/ given below:

4 Mark(s)

C and D only C and D only
B, C and D only B, C and D only
A, C and D only A, C and D only
D only D only

Match List-I with List-IIl Choose the correct answer from the options given below:

.List-I	List-II
(a) Head	(i) Enzymes
(b) Middle piece	(ii) Sperm motility
(c) Acrosome	(iii) Energy
(d) Tail	(iv) Genetic material

Match List-I with List-IIl Choose the correct answer from the options given below:

.List-I	List-II
(a) Head	(i) Enzymes
(b) Middle piece	(ii) Sperm motility
(c) Acrosome	(iii) Energy
(d) Tail	(iv) Genetic material

4 Mark(s)

A-IV, B-III, C-I, D-II
A-IV, B-III, C-II D-I
A-III, B-IV, C-II, D-I
A-III, B-II, C-I, D-IV

The standard heat of formation, in kcal/mol of Ba²⁺ is:[Given: Standard heat of formation of SO₄²⁻ ion (aq) = −216 kcal/mol. Standard heat of crystallisation of BaSO₄(s) = −4.5 kcal/mol. Standard heat of formation of BaSO₄(s) = −349 kcal/mol] The standard heat of formation, in kcal/mol of Ba²⁺ is:[Given: Standard heat of formation of SO₄²⁻ ion (aq) = −216 kcal/mol. Standard heat of crystallisation of BaSO₄(s) = −4.5 kcal/mol. Standard heat of formation of BaSO₄(s) = −349 kcal/mol]

4 Mark(s)

−128.5 −128.5
−133.0 −133.0
133 133
220.5 220.5

Genes R and Y follow independent assortment. If RRYY produce round yellow seeds and rryy produce wrinkled green seeds, what will be the phenotypic ratio of the F2 generation? Genes R and Y follow independent assortment. If RRYY produce round yellow seeds and rryy produce wrinkled green seeds, what will be the phenotypic ratio of the F2 generation?

4 Mark(s)

Phenotypic ratio-1: 2: 1 Phenotypic ratio-1: 2: 1
Phenotypic ratio-3: 1 Phenotypic ratio-3: 1
Phenotypic ratio-9: 3: 3: 1 Phenotypic ratio-9: 3: 3: 1
Phenotypic ratio-9: 7 Phenotypic ratio-9: 7

A 2 amp current is flowing through two different small circular copper coils having radii ratio 1 : 2. The ratio of their respective magnetic moments will be A 2 amp current is flowing through two different small circular copper coils having radii ratio 1 : 2. The ratio of their respective magnetic moments will be

4 Mark(s)

0.044444444444444 0.044444444444444
0.043055555555556 0.043055555555556
0.084027777777778 0.084027777777778
0.16736111111111 0.16736111111111

Among the following choose the ones with equal number of atoms.A. 212 g of Na₂CO₃(s) [molar mass = 106 g]B. 248 g of Na₂O (s) [molar mass = 62 g]C. 240 g of NaOH (s) [molar mass = 40 g]D. 12 g of H₂(g) [molar mass = 2 g]E. 220 g of CO₂(g) [molar mass = 44 g]Choose the correct answer from the options given below: Among the following choose the ones with equal number of atoms.A. 212 g of Na₂CO₃(s) [molar mass = 106 g]B. 248 g of Na₂O (s) [molar mass = 62 g]C. 240 g of NaOH (s) [molar mass = 40 g]D. 12 g of H₂(g) [molar mass = 2 g]E. 220 g of CO₂(g) [molar mass = 44 g]Choose the correct answer from the options given below:

4 Mark(s)

A, B and C only A, B and C only
A, B and D only A, B and D only
B, C and D only B, C and D only
B, D and E only B, D and E only

The radius of Martian orbit around the Sun is about 4 times the radius of the orbit of Mercury. The Martian year is 687 Earth days. Then which of the following is the length of 1 year on Mercury ? The radius of Martian orbit around the Sun is about 4 times the radius of the orbit of Mercury. The Martian year is 687 Earth days. Then which of the following is the length of 1 year on Mercury ?

4 Mark(s)

88 earth days 88 earth days
225 earth days 225 earth days
172 earth days 172 earth days
124 earth days 124 earth days

A body weighs 48 N on the surface of the earth. The gravitational force experienced by the body due to the earth at a height equal to one-third the radius of the earth from its surface is : A body weighs 48 N on the surface of the earth. The gravitational force experienced by the body due to the earth at a height equal to one-third the radius of the earth from its surface is :

4 Mark(s)

16 N 16 N
27 N 27 N
32 N 32 N
36 N 36 N

A balloon is made of a material of surface tension S and its inflation outlet (from where gas is filled in it) has small area A. It is filled with a gas of density ρ and takes a spherical shape of radius R. When the gas is allowed to flow freely out of it, its radius changes from R to 0 (zero) in time T. If the speed v(r) of gas coming out of the balloon depends on r as rᵃ and T ∝ Sᵅ Aᵝ ρᵞ Rᵟ then A balloon is made of a material of surface tension S and its inflation outlet (from where gas is filled in it) has small area A. It is filled with a gas of density ρ and takes a spherical shape of radius R. When the gas is allowed to flow freely out of it, its radius changes from R to 0 (zero) in time T. If the speed v(r) of gas coming out of the balloon depends on r as rᵃ and T ∝ Sᵅ Aᵝ ρᵞ Rᵟ then

4 Mark(s)

a=12,α=12,β=−1,γ=+1,δ=32a=\frac12,\alpha=\frac12,\beta=-1,\gamma=+1,\delta=\frac32
a=−12,α=−12,β=−1,γ=−12,δ=52a=-\frac12,\alpha=-\frac12,\beta=-1,\gamma=-\frac12,\delta=\frac52
a=−12,α=−12,β=−1,γ=12,δ=72a=-\frac12,\alpha=-\frac12,\beta=-1,\gamma=\frac12,\delta=\frac72
a=12,α=12,β=−12,γ=12,δ=72a=\frac12,\alpha=\frac12,\beta=-\frac12,\gamma=\frac12,\delta=\frac72

Which of the following are the post-transcriptional events in an eukaryotic cell?A. Transport of pre-mRNA to cytoplasm prior to splicing.B. Removal of introns and joining of exons.C. Addition of methyl group5′ end of hnRNA.D. Addition of adenine residues at 3′ end of mRNA.E. Base pairing of two complementary RNAs.Choose the correct answer from the options given below: Which of the following are the post-transcriptional events in an eukaryotic cell?A. Transport of pre-mRNA to cytoplasm prior to splicing.B. Removal of introns and joining of exons.C. Addition of methyl group5′ end of hnRNA.D. Addition of adenine residues at 3′ end of mRNA.E. Base pairing of two complementary RNAs.Choose the correct answer from the options given below:

4 Mark(s)

A, B, C only A, B, C only
B, C, D only B, C, D only
B, C, E only B, C, E only
C, D, E only C, D, E only

Consider the following compounds:K‾O2, H2O‾2\underline{\mathrm K}\mathrm O_2,\ \mathrm H_2\underline{\mathrm O}_2 and H2S‾O4.\mathrm H_2\underline{\mathrm S}\mathrm O_4.The oxidation states of the underlined elements in them are, respectively, Consider the following compounds:K‾O2, H2O‾2\underline{\mathrm K}\mathrm O_2,\ \mathrm H_2\underline{\mathrm O}_2 and H2S‾O4.\mathrm H_2\underline{\mathrm S}\mathrm O_4.The oxidation states of the underlined elements in them are, respectively,

4 Mark(s)

+1, −1, and +6 +1, −1, and +6
+2, −2, and +6 +2, −2, and +6
+1, −2, and +4 +1, −2, and +4
+4, −4, and +6 +4, −4, and +6

Which are correct?A. Computed tomography and magnetic resonance imaging detect cancers of internal organs.B. Chemotherapeutics drugs are used to kill non-cancerous cells.C. α-interferon activate the cancer patients immune system and helps in destroying the tumour.D. Chemotherapeutic drugs are biological response modifiers.E. In the case of leukaemia blood cell counts are decreased.Choose the correct answer from the options given below: Which are correct?A. Computed tomography and magnetic resonance imaging detect cancers of internal organs.B. Chemotherapeutics drugs are used to kill non-cancerous cells.C. α-interferon activate the cancer patients immune system and helps in destroying the tumour.D. Chemotherapeutic drugs are biological response modifiers.E. In the case of leukaemia blood cell counts are decreased.Choose the correct answer from the options given below:

4 Mark(s)

B and D only B and D only
D and E only D and E only
C and D only C and D only
A and C only A and C only

Which of the following diagrams is correct with regard to the proximal (P) and distal (D) tubule of the Nephron. Which of the following diagrams is correct with regard to the proximal (P) and distal (D) tubule of the Nephron.

4 Mark(s)

(a) Original diagram below (a) Original diagram below
(b) Original diagram below (b) Original diagram below
(c) Original diagram below (c) Original diagram below
(d) Original diagram below (d) Original diagram below

Silencing of specific mRNA is possible via RNAi because of - Silencing of specific mRNA is possible via RNAi because of -

4 Mark(s)

Complementary dsRNA Complementary dsRNA
Inhibitory ssRNA Inhibitory ssRNA
Complementary tRNA Complementary tRNA
Non-complementary ssRNA Non-complementary ssRNA

All living members of the class Cyclostomata are: All living members of the class Cyclostomata are:

4 Mark(s)

Free living Free living
Endoparasite Endoparasite
Symbiotic Symbiotic
Ectoparasite Ectoparasite

Given below are two statements :Statement-I : Ferromagnetism is considered as an extreme form of paramagnetism.Statement-II : The number of unpaired electrons in a Cr²⁺ ion (Z = 24) is the same as that of a Nd³⁺ ion (Z = 60).In the light of the above statements, choose the correct answer from the options given below Given below are two statements :Statement-I : Ferromagnetism is considered as an extreme form of paramagnetism.Statement-II : The number of unpaired electrons in a Cr²⁺ ion (Z = 24) is the same as that of a Nd³⁺ ion (Z = 60).In the light of the above statements, choose the correct answer from the options given below

4 Mark(s)

Both Statements I and Statement II are true
Both Statements I and Statements II are false
Statement I is true but Statement II is false
Statement I is false but Statements II is true

The intensity of transmitted light when a polaroid sheet placed between two crossed polaroids at 22.5° from the polarization axis of one of the polaroid, is (I₀ is the intensity of polarised light after passing through the first polaroid): The intensity of transmitted light when a polaroid sheet placed between two crossed polaroids at 22.5° from the polarization axis of one of the polaroid, is (I₀ is the intensity of polarised light after passing through the first polaroid):

4 Mark(s)

I02\frac{I_0}{2} I02\frac{I_0}{2}
I04\frac{I_0}{4} I04\frac{I_0}{4}
I08\frac{I_0}{8} I08\frac{I_0}{8}
I016\frac{I_0}{16} I016\frac{I_0}{16}

Predict the major product ‘P’ in the following sequence of reactions-Original reaction and structures reproduced below. Predict the major product ‘P’ in the following sequence of reactions-Original reaction and structures reproduced below.

4 Mark(s)

(a) (a)
(b) (b)
(c) (c)
(d) (d)

The kinetic energies of two similar cars A and B are 100 J and 225 J respectively. On applying breaks, car A stops after 1000 m and car B stops after 1500 m. If Fₐ and Fᵦ are the forces applied by the breaks on cars A and B, respectively, then the ratio FA/FB is :

4 Mark(s)

1.5
0.66
0.5
0.33

If the rate constant of a reaction is 0.03 s⁻¹, how much time does it take for 7.2 mol L⁻¹ concentration of the reactant to get reduced to 0.9 mol L⁻¹ ?(Given: log 2 = 0.301) If the rate constant of a reaction is 0.03 s⁻¹, how much time does it take for 7.2 mol L⁻¹ concentration of the reactant to get reduced to 0.9 mol L⁻¹ ?(Given: log 2 = 0.301)

4 Mark(s)

69.3 s 69.3 s
23.1 s 23.1 s
210 s 210 s
21.0 s 21.0 s

In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then the power of the combination and the total magnification in comparison to the power (p) and magnification (m) for each lens will be, respectively In a certain camera, a combination of four similar thin convex lenses are arranged axially in contact. Then the power of the combination and the total magnification in comparison to the power (p) and magnification (m) for each lens will be, respectively

4 Mark(s)

4p and 4m 4p and 4m
p⁴ and 4m p⁴ and 4m
4p and m⁴ 4p and m⁴
p⁴ and m⁴ p⁴ and m⁴

A uniform rod of mass 20 kg and length 5 m leans against a smooth vertical wall making an angle of 60° with it. The other end rests on a rough horizontal floor. The friction force that the floor exerts on the rod is (take g = 10 m/s²) A uniform rod of mass 20 kg and length 5 m leans against a smooth vertical wall making an angle of 60° with it. The other end rests on a rough horizontal floor. The friction force that the floor exerts on the rod is (take g = 10 m/s²)

4 Mark(s)

100 N 100 N
100√3 N 100√3 N
200 N 200 N
200√3 N 200√3 N

Given below are two statements:Statement-I: Like nitrogen that can form ammonia, arsenic can form arsine.Statement-II : Antimony cannot form antimony pentoxide.In the light of the above statements, choose the most appropriate answer from the options given below : Given below are two statements:Statement-I: Like nitrogen that can form ammonia, arsenic can form arsine.Statement-II : Antimony cannot form antimony pentoxide.In the light of the above statements, choose the most appropriate answer from the options given below :

4 Mark(s)

Both Statement I and Statement II are correct
Both Statement I and Statement II are incorrect
Statement I is correct but Statement II is incorrect
Statement I is incorrect but Statement II is correct

Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A): The primary function of the Golgi apparatus is to package the materials made by the endoplasmic reticulum and deliver it to intracellular targets and outside the cell.Reason (R): Vesicles containing materials made by the endoplasmic reticulum fuse with the cis face of the Golgi apparatus, and they are modified and released from the trans face of the Golgi apparatus.In the light of the above statements, choose the correct answer from the options given below: Given below are two statements: one is labelled as Assertion (A) and the other is labelled as Reason (R).Assertion (A): The primary function of the Golgi apparatus is to package the materials made by the endoplasmic reticulum and deliver it to intracellular targets and outside the cell.Reason (R): Vesicles containing materials made by the endoplasmic reticulum fuse with the cis face of the Golgi apparatus, and they are modified and released from the trans face of the Golgi apparatus.In the light of the above statements, choose the correct answer from the options given below:

4 Mark(s)

Both A and R are true and R is the correct explanation of A.
Both A and R are true but R is not the correct explanation of A.
A is true but R is false A is true but R is false
A is false but R is true A is false but R is true

Neoplastic characteristics of cells refer to:A. A mass of proliferating cellB. Rapid growth of cellsC. Invasion and damage to the surrounding tissueD. Those confined to original locationChoose the correct answer from the options given below: Neoplastic characteristics of cells refer to:A. A mass of proliferating cellB. Rapid growth of cellsC. Invasion and damage to the surrounding tissueD. Those confined to original locationChoose the correct answer from the options given below:

4 Mark(s)

A, B only A, B only
A, B, C only A, B, C only
A, B, D only. A, B, D only.
B, C, D only B, C, D only

Which one of the following enzymes contains ‘Haem’ as the prosthetic group? Which one of the following enzymes contains ‘Haem’ as the prosthetic group?

4 Mark(s)

RuBisCo RuBisCo
Carbonic anhydrase Carbonic anhydrase
Succinate dehydrogenase Succinate dehydrogenase
Catalase Catalase

The electric field in a plane electromagnetic wave is given by E_z = 60 cos (5x + 1.5 × 10⁹t) V/m.Then expression for the corresponding magnetic field is (here subscripts denote the direction of the field): The electric field in a plane electromagnetic wave is given by E_z = 60 cos (5x + 1.5 × 10⁹t) V/m.Then expression for the corresponding magnetic field is (here subscripts denote the direction of the field):

4 Mark(s)

B_y = 2 × 10⁻⁷ cos (5x + 1.5 × 10⁹t) T
B_x = 2 × 10⁻⁷ cos (5x + 1.5 × 10⁹t) T
B_z = 60 cos (5x + 1.5 × 10⁹t) T B_z = 60 cos (5x + 1.5 × 10⁹t) T
B_y = 60 sin (5x + 1.5 × 10⁹t) T B_y = 60 sin (5x + 1.5 × 10⁹t) T

The major product of the following reaction isOriginal reaction and options reproduced below. The major product of the following reaction isOriginal reaction and options reproduced below.

4 Mark(s)

(a) (a)
(b) (b)
(c) (c)
(d) (d)

Sugar ‘X’A. is found in honey.B. is a keto sugar.C. exists in α and β - anomeric forms.D. is laevorotatory.‘X’ is : Sugar ‘X’A. is found in honey.B. is a keto sugar.C. exists in α and β - anomeric forms.D. is laevorotatory.‘X’ is :

4 Mark(s)

D-Glucose D-Glucose
D-Fructose D-Fructose
Maltose Maltose
Sucrose Sucrose

Consider the diameter of a spherical object being measured with the help of a Vernier callipers. Suppose its 10 Vernier Scale Divisions (V.S.D.). are equal to its 9 Main Scale Divisions (M.S.D.) The least division in the M.S. is 0.1 cm and the zero of V.S. is at x = 0.1 cm when the jaws of Vernier callipers are closed.If the main scale reading for the diameter is M = 5 cm and the number of coinciding vernier division is 8, the measured diameter after zero error correction, is Consider the diameter of a spherical object being measured with the help of a Vernier callipers. Suppose its 10 Vernier Scale Divisions (V.S.D.). are equal to its 9 Main Scale Divisions (M.S.D.) The least division in the M.S. is 0.1 cm and the zero of V.S. is at x = 0.1 cm when the jaws of Vernier callipers are closed.If the main scale reading for the diameter is M = 5 cm and the number of coinciding vernier division is 8, the measured diameter after zero error correction, is

4 Mark(s)

5.18 cm 5.18 cm
5.08 cm 5.08 cm
4.98 cm 4.98 cm
5.00 cm 5.00 cm

Find the statement that is NOT correct with regard to the structure of monocot stem. Find the statement that is NOT correct with regard to the structure of monocot stem.

4 Mark(s)

Hypodermis is parenchymatous Hypodermis is parenchymatous
Vascular bundles are scattered. Vascular bundles are scattered.
Vascular bundles are conjoint and closed.
Phloem parenchyma is absent. Phloem parenchyma is absent.

Match List-I with List-IIList-IA. PteridophyteB. BryophyteC. AngiospermD. GymnospermList-III. SalviaII. GinkgoIII. PolytrichumIV. SalviniaChoose the option with all correct matches: Match List-I with List-IIList-IA. PteridophyteB. BryophyteC. AngiospermD. GymnospermList-III. SalviaII. GinkgoIII. PolytrichumIV. SalviniaChoose the option with all correct matches:

4 Mark(s)

A-III, B-IV, C-II, D-I A-III, B-IV, C-II, D-I
A-IV, B-III, C-I, D-II A-IV, B-III, C-I, D-II
A-III, B-IV, C-I, D-II A-III, B-IV, C-I, D-II
A-IV, B-III, C-II, D-I A-IV, B-III, C-II, D-I

Which one of the following compounds does not decolourize bromine water ? Which one of the following compounds does not decolourize bromine water ?

4 Mark(s)

(a) Original structure below (a) Original structure below
(b) Original structure below (b) Original structure below
(c) Original structure below (c) Original structure below
(d) Original structure below (d) Original structure below

Cardiac activities of the heart are regulated by:A. Nodal tissueB. A special neural centre in the medulla oblongataC. Adrenal medullary hormonesD. Adrenal cortical hormonesChoose the correct answer from the options given below: Cardiac activities of the heart are regulated by:A. Nodal tissueB. A special neural centre in the medulla oblongataC. Adrenal medullary hormonesD. Adrenal cortical hormonesChoose the correct answer from the options given below:

4 Mark(s)

A, B and C only A, B and C only
A, B, C and D A, B, C and D
A, C and D only A, C and D only
A, B and D Only A, B and D Only

To an ac power supply of 220 V at 50 Hz, a resistor of 20 Ω, a capacitor of reactance 25 Ω and an inductor of reactance 45 Ω are connected in series. The corresponding current in the circuit and the phase angle between the current and the voltage is, respectively- To an ac power supply of 220 V at 50 Hz, a resistor of 20 Ω, a capacitor of reactance 25 Ω and an inductor of reactance 45 Ω are connected in series. The corresponding current in the circuit and the phase angle between the current and the voltage is, respectively-

4 Mark(s)

7.8 A and 30° 7.8 A and 30°
7.8 A and 45° 7.8 A and 45°
15.6 and 30° 15.6 and 30°
15.6 and 45° 15.6 and 45°

The plates of a parallel plate capacitor are separated by d. Two slabs of different dielectric constant K₁ and K₂, with thickness 38d\frac38d and d2\frac d2, respectively are inserted in the capacitor. Due to this, the capacitance becomes two times larger than when there is nothing between the plates.(If K₁ = 1.25 K₂, the value of K₁ is : The plates of a parallel plate capacitor are separated by d. Two slabs of different dielectric constant K₁ and K₂, with thickness 38d\frac38d and d2\frac d2, respectively are inserted in the capacitor. Due to this, the capacitance becomes two times larger than when there is nothing between the plates.(If K₁ = 1.25 K₂, the value of K₁ is :

4 Mark(s)

2.66 2.66
2.33 2.33
1.6 1.6
1.33 1.33

A pipe open at both ends has a fundamental frequency f in air. The pipe is now dipped vertically in a water drum to half of its length. The fundamental frequency of the air column is now equal to : A pipe open at both ends has a fundamental frequency f in air. The pipe is now dipped vertically in a water drum to half of its length. The fundamental frequency of the air column is now equal to :

4 Mark(s)

f2\frac f2 f2\frac f2
f f
3f2\frac{3f}{2} 3f2\frac{3f}{2}
2f 2f

An oxygen cylinder of volume 30 litre has 18.20 moles of oxygen. After some oxygen is withdrawn from the cylinder, its gauge pressure drops to 11 atmospheric pressure at temperature 27°C. The mass of the oxygen withdrawn from the cylinder is nearly equal to:[Given, R = 100/12 J mol⁻¹ K⁻¹ and molecular mass of O₂ = 32, 1 atm pressure = 1.01 × 10⁵ N/m]

4 Mark(s)

0.125 kg
0.144 kg
0.116 kg
0.156 kg

Higher yield of NO inN₂(g) + O₂(g) ⇌ =2NO(g) can be obtained at[ΔH of the reaction = +180.7 kJ mol⁻¹]A. higher temperatureB. lower temperatureC. higher concentration of N₂D. higher concentration of O₂Choose the correct answer from the options given below: Higher yield of NO inN₂(g) + O₂(g) ⇌ =2NO(g) can be obtained at[ΔH of the reaction = +180.7 kJ mol⁻¹]A. higher temperatureB. lower temperatureC. higher concentration of N₂D. higher concentration of O₂Choose the correct answer from the options given below:

4 Mark(s)

A, D only A, D only
B, C only B, C only
B, C, D only B, C, D only
A, C, D only A, C, D only

Match List-I with List-II.List-IA. ScutellumB. Non-albuminous seedC. EpiblastD. PerispermList-III. Persistent nucellusII. Cotyledon of Monocot seedIII. GroundnutIV. Rudimentary cotyledonChoose the option with all correct matches. Match List-I with List-II.List-IA. ScutellumB. Non-albuminous seedC. EpiblastD. PerispermList-III. Persistent nucellusII. Cotyledon of Monocot seedIII. GroundnutIV. Rudimentary cotyledonChoose the option with all correct matches.

4 Mark(s)

A-II, B-III, C-IV, D-I A-II, B-III, C-IV, D-I
A-IV, B-III, C-II, D-I A-IV, B-III, C-II, D-I
A-IV, B-III, C-I, D-II A-IV, B-III, C-I, D-II
A-II, B-IV, C-III, D-I A-II, B-IV, C-III, D-I

If the molar conductivity(Λₘ) of a 0.050 mol L⁻¹ solution of a monobasic weak acid is 90 S cm² mol⁻¹, its extent (degree) of dissociation will be[Assume Λ⁰₊ = 349.6 S cm² mol⁻¹ and Λ⁰₋ = 50.4S cm² mol⁻¹.] If the molar conductivity(Λₘ) of a 0.050 mol L⁻¹ solution of a monobasic weak acid is 90 S cm² mol⁻¹, its extent (degree) of dissociation will be[Assume Λ⁰₊ = 349.6 S cm² mol⁻¹ and Λ⁰₋ = 50.4S cm² mol⁻¹.]

4 Mark(s)

0.115 0.115
0.125 0.125
0.225 0.225
0.215 0.215

A model for quantized motion of an electron in a uniform magnetic field B states that the flux passing through the orbit of the electron is n(he)\left(\frac{h}{e}\right) where n is an integer, h is Planck’s constant and e is the magnitude of electron’s charge. According to the model, the magnetic moment of an electron in its lowest energy state will be (m is the mass of the electron) A model for quantized motion of an electron in a uniform magnetic field B states that the flux passing through the orbit of the electron is n(he)\left(\frac{h}{e}\right) where n is an integer, h is Planck’s constant and e is the magnitude of electron’s charge. According to the model, the magnetic moment of an electron in its lowest energy state will be (m is the mass of the electron)

4 Mark(s)

he/πm he/πm
he/2πm he/2πm
heB/πm heB/πm
heB/2πm heB/2πm

Given below are two statements:Statement-I: In ecosystem, there is unidirectional flow of energy of sun from producers of consumers.Statement-II: Ecosystems are exempted from 2ⁿᵈ law of thermodynamics.In the light of the above statements, choose the most appropriate answer from the options given below: Given below are two statements:Statement-I: In ecosystem, there is unidirectional flow of energy of sun from producers of consumers.Statement-II: Ecosystems are exempted from 2ⁿᵈ law of thermodynamics.In the light of the above statements, choose the most appropriate answer from the options given below:

4 Mark(s)

Both statement-I and statement II are correct
Both statement I and statement II are incorrect
Statement-I is correct but statement II is incorrect
Statement-I is incorrect but statement II is correct

AB is a part of an electrical circuit (see figure). The potential difference “Vₐ − Vᵦ” at the instant when current i = 2 A and is increasing at a rate of 1 amp/second is:

4 Mark(s)

5 volt
6 volt
9 volt
10 volt

The complex II of mitochondrial electron transport chain is also known as The complex II of mitochondrial electron transport chain is also known as

4 Mark(s)

Cytochrome bc₁ Cytochrome bc₁
Succinate dehydrogenase Succinate dehydrogenase
Cytochrome c oxidase Cytochrome c oxidase
NADH dehydrogenase NADH dehydrogenase

The blue and white selectable markers have been developed which differentiate recombinant colonies from non-recombinant colonies on the basis of their ability to produce colour in the presence of a chromogenic substrate.Given below are two statements about this method:Statement-I: The blue coloured colonies have DNA insert in the plasmid and they are identified as recombinant colonies.Statement-II: The colonies without blue colour have DNA insert in the plasmid and are identified as recombinant colonies.In the light of the above statements, choose the most appropriate answer from the options given below: The blue and white selectable markers have been developed which differentiate recombinant colonies from non-recombinant colonies on the basis of their ability to produce colour in the presence of a chromogenic substrate.Given below are two statements about this method:Statement-I: The blue coloured colonies have DNA insert in the plasmid and they are identified as recombinant colonies.Statement-II: The colonies without blue colour have DNA insert in the plasmid and are identified as recombinant colonies.In the light of the above statements, choose the most appropriate answer from the options given below:

4 Mark(s)

Both statement I and statement II are correct
Both statement I and statement II is incorrect
Statement is I correct but statement II is incorrect
Statement I is incorrect but statement II is correct

Which of the following enzyme(s) are NOT essential for gene cloning?A. Restriction enzymesB. DNA ligaseC. DNA mutaseD. DNA recombinaseE. DNA polymeraseChoose the correct answer from the options given below: Which of the following enzyme(s) are NOT essential for gene cloning?A. Restriction enzymesB. DNA ligaseC. DNA mutaseD. DNA recombinaseE. DNA polymeraseChoose the correct answer from the options given below:

4 Mark(s)

C and D only C and D only
A and B only A and B only
D and E only D and E only
B and C only B and C only

The correct order of decreasing acidity of the following aliphatic acids is :- The correct order of decreasing acidity of the following aliphatic acids is :-

4 Mark(s)

(CH₃)₃CCOOH > (CH₃)₂CHCOOH > CH₃COOH > HCOOH
CH₃COOH > (CH₃)₂CHCOOH > (CH₃)₃CCOOH > HCOOH
HCOOH > CH₃COOH > (CH₃)₂CHCOOH > (CH₃)₃CCOOH
HCOOH > (CH₃)₃CCOOH > (CH₃)₂CHCOOH > CH₃COOH