3. METALS AND NON-METALS-A&R’S-1

Assertion: Aluminium oxide is amphoteric. Reason: They are found mainly as oxides, sulphides or carbonates. Assertion: Aluminium oxide is amphoteric. Reason: They are found mainly as oxides, sulphides or carbonates.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Sodium has electronic configuration 2,8,1. Reason: Bronze is an alloy of copper and tin. Assertion: Sodium has electronic configuration 2,8,1. Reason: Bronze is an alloy of copper and tin.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Anhydrous calcium chloride removes moisture. Reason: It adds moisture to make the air wet. Assertion: Anhydrous calcium chloride removes moisture. Reason: It adds moisture to make the air wet.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Painting prevents rusting. Reason: Painting accelerates rusting by exposing iron to air. Assertion: Painting prevents rusting. Reason: Painting accelerates rusting by exposing iron to air.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Graphite is an allotrope of carbon. Reason: The zinc coating provides the stated protection against rusting. Assertion: Graphite is an allotrope of carbon. Reason: The zinc coating provides the stated protection against rusting.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: A thin oxide layer can protect aluminium from further oxidation. Reason: Aluminium forms a protective oxide layer when exposed to air. Assertion: A thin oxide layer can protect aluminium from further oxidation. Reason: Aluminium forms a protective oxide layer when exposed to air.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Calcination uses limited air. Reason: Calcination requires a large excess of air. Assertion: Calcination uses limited air. Reason: Calcination requires a large excess of air.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Metals are generally good conductors. Reason: Bromine is a liquid non-metal. Assertion: Metals are generally good conductors. Reason: Bromine is a liquid non-metal.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Gangue includes soil and sand. Reason: Gangue is the pure metal obtained after refining. Assertion: Gangue includes soil and sand. Reason: Gangue is the pure metal obtained after refining.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Graphite conducts electricity. Reason: Graphite is an insulator according to the chapter. Assertion: Graphite conducts electricity. Reason: Graphite is an insulator according to the chapter.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Sodium and potassium form hydroxides with water. Reason: Solder has a low melting point. Assertion: Sodium and potassium form hydroxides with water. Reason: Solder has a low melting point.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Magnesium reacts with hot water. Reason: Silver turns black on exposure to air. Assertion: Magnesium reacts with hot water. Reason: Silver turns black on exposure to air.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Stainless steel is hard. Reason: Copper develops a green coating. Assertion: Stainless steel is hard. Reason: Copper develops a green coating.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Iron rusts when both air and water are available. Reason: It is very soft. Assertion: Iron rusts when both air and water are available. Reason: It is very soft.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Sodium oxide forms an alkali with water. Reason: Sodium oxide dissolves in water to produce sodium hydroxide. Assertion: Sodium oxide forms an alkali with water. Reason: Sodium oxide dissolves in water to produce sodium hydroxide.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Al2O3 reacts with NaOH. Reason: Mercury is liquid at room temperature. Assertion: Al2O3 reacts with NaOH. Reason: Mercury is liquid at room temperature.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Magnesium can give hydrogen with very dilute nitric acid. Reason: Magnesium never reacts with nitric acid under any conditions. Assertion: Magnesium can give hydrogen with very dilute nitric acid. Reason: Magnesium never reacts with nitric acid under any conditions.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Galvanising uses zinc. Reason: It may contain two or more metals, or a metal and a non-metal. Assertion: Galvanising uses zinc. Reason: It may contain two or more metals, or a metal and a non-metal.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Gold and silver are the most malleable metals. Reason: Bromine is a liquid non-metal at room temperature. Assertion: Gold and silver are the most malleable metals. Reason: Bromine is a liquid non-metal at room temperature.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Metals are generally malleable. Reason: The chapter asks for this distinction in relation to corrosion. Assertion: Metals are generally malleable. Reason: The chapter asks for this distinction in relation to corrosion.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: CaCl2 has a boiling point of 1900 K. Reason: An alloy is homogeneous. Assertion: CaCl2 has a boiling point of 1900 K. Reason: An alloy is homogeneous.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Sodium is obtained by electrolysis of molten sodium chloride. Reason: Sodium is obtained by heating sodium chloride with carbon. Assertion: Sodium is obtained by electrolysis of molten sodium chloride. Reason: Sodium is obtained by heating sodium chloride with carbon.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: An alloy is a homogeneous mixture. Reason: An alloy is always a pure element. Assertion: An alloy is a homogeneous mixture. Reason: An alloy is always a pure element.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: MgCl2 has a melting point of 981 K in the table. Reason: Its boiling point in the table is 1685 K. Assertion: MgCl2 has a melting point of 981 K in the table. Reason: Its boiling point in the table is 1685 K.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Lead does not react with water. Reason: Lead is among the metals stated not to react with water at all. Assertion: Lead does not react with water. Reason: Lead is among the metals stated not to react with water at all.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Gangue includes soil and sand. Reason: Pure metal is deposited on the cathode. Assertion: Gangue includes soil and sand. Reason: Pure metal is deposited on the cathode.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: The activity series is arranged in decreasing reactivity. Reason: Potassium is at the top and gold is at the bottom. Assertion: The activity series is arranged in decreasing reactivity. Reason: Potassium is at the top and gold is at the bottom.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Highly reactive metals are not found free in nature. Reason: An equivalent amount of pure metal is deposited at the cathode. Assertion: Highly reactive metals are not found free in nature. Reason: An equivalent amount of pure metal is deposited at the cathode.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Aluminium oxide is both acidic and basic in behaviour. Reason: Copper oxide is basic. Assertion: Aluminium oxide is both acidic and basic in behaviour. Reason: Copper oxide is basic.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

Assertion: Copper develops a green coating. Reason: The chapter gives brass and bronze as examples. Assertion: Copper develops a green coating. Reason: The chapter gives brass and bronze as examples.

1 Mark(s)

Both Assertion and Reason are true, and Reason is the correct explanation of Assertion.
Both Assertion and Reason are true, but Reason is not the correct explanation of Assertion.
Assertion is true, but Reason is false. Assertion is true, but Reason is false.
Assertion is false, but Reason is true. Assertion is false, but Reason is true.

3. METALS AND NON-METALS-A&R’S-1 : Question 1 of 30