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Metals and Non-Metals

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Which of the following has properties of both metal and non-metal?

  1. Silver

  2. Phosphorus

  3. Arsenic

  4. Sulphur

  5. Iron


Correct Option: C
Explanation:

It is a metalloid, has properties of both metal and non-metal.

Which of the following is the most reactive metal?

  1. Potassium

  2. Magnesium

  3. Gold

  4. Nickel

  5. Lead


Correct Option: A
Explanation:

It is the most reactive.

Which of these is the least reactive?

  1. Sodium

  2. Iron

  3. Silver

  4. Tin

  5. Aluminium


Correct Option: C
Explanation:

It is the least reactive.

In the following metals, ________ is soft and can be cut with knife.

  1. mercury

  2. potassium

  3. calcium

  4. magnesium

  5. copper


Correct Option: B
Explanation:

It is soft and can be cut with knife.

Which of the following metals is used in dry cell?

  1. Iron

  2. Copper

  3. Zinc

  4. Aluminium

  5. Lead


Correct Option: C
Explanation:

It is used in dry cells.

Which metal is stored in kerosene due to its high reactivity with air and water?

  1. Tin

  2. Zinc

  3. Sodium

  4. Copper

  5. Magnesium


Correct Option: C
Explanation:

It reacts vigorously with air and water.

Which of the following statements is not correct?

  1. Copper can be formed into wires.

  2. Aluminium can be beaten into thin sheets.

  3. The solution of magnesium oxide turns red litmus blue.

  4. Copper wires are used in electric circuits.

  5. Gold, in contact with lemon juice, turns blackish in colour.


Correct Option: E
Explanation:

Gold does not react with citric acid as it is the least reactive metal.

Which of the following is the best conductor of electricity?

  1. Silver

  2. Potassium

  3. Zinc

  4. Gold

  5. Nickel


Correct Option: A
Explanation:

Silver is the best conductor of electricity.

Which of the following non-metals is used in making electrodes in dry cell?

  1. Graphite

  2. Phosphorus

  3. Hydrogen

  4. Sulphur

  5. Silicon


Correct Option: A
Explanation:

It is used in making electrodes in dry cells.

Which of these are the only non-metals which is a good conductor of heat and electricity?

  1. Hydrogen

  2. Phosphorus

  3. Silicon

  4. Graphite

  5. Sulphur


Correct Option: D
Explanation:

It is a good conductor of heat and electricity.

Which of the following statements is correct?

  1. Zn is displaced by Cu from ZnSO4 solution.

  2. Immersion rods can be made of aluminium.

  3. Lemon pickle can be put in aluminium vessel.

  4. Potassium is stored in water to avoid its reaction with air.

  5. Sulphur dioxide being basic in nature, turns red litmus blue.


Correct Option: B
Explanation:

Metals are good conductors of heat and electricity.

Which of these alloys is a constituent of lead and tin?

  1. Steel

  2. Stainless steel

  3. Bronze

  4. Solder

  5. Brass


Correct Option: D
Explanation:

Its constituents are lead and tin.

Which of the following alloys constitutes iron and carbon?

  1. Brass

  2. Bronze

  3. Stainless steel

  4. Steel

  5. Solder


Correct Option: D
Explanation:

Its constituents are iron and carbon.

Which of the following is not a metal?

  1. Iron

  2. Copper

  3. Sulphur

  4. Tin

  5. Silver


Correct Option: C
Explanation:

It is a non-metal.

Which of the following metals/non-metals does not react with dilute hydrochloric acid but reacts with sulphuric acid?

  1. Charcoal

  2. Copper

  3. Iron

  4. Aluminium

  5. Magnesium


Correct Option: B
Explanation:

It is non-reactive with dilute HCl but reacts with H2SO4.

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