Metal and Non metal

Here are 20 multiple-choice questions (MCQs) from the chapter "Metals and Non-Metals" (Class 10), along with their answers.

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1. Which of the following is a property of metals?

A) Brittle

B) Poor conductor of heat

C) Dull appearance

D) Malleable

✅ Answer: D) Malleable

2. Which of the following is a good conductor of electricity?

A) Sulfur

B) Graphite

C) Phosphorus

D) Iodine

✅ Answer: B) Graphite

3. Which metal is the most reactive?

A) Iron

B) Zinc

C) Potassium

D) Copper

✅ Answer: C) Potassium

4. Which of the following non-metals is liquid at room temperature?

A) Iodine

B) Bromine

C) Carbon

D) Phosphorus

✅ Answer: B) Bromine

5. The metal which is stored in kerosene is:

A) Iron

B) Copper

C) Sodium

D) Aluminium

✅ Answer: C) Sodium

6. Which metal is used for making aircraft due to its lightweight?

A) Copper

B) Aluminium

C) Zinc

D) Lead

✅ Answer: B) Aluminium

7. The most abundant metal in the Earth's crust is:

A) Iron

B) Aluminium

C) Copper

D) Zinc

✅ Answer: B) Aluminium

8. Rusting of iron occurs due to the presence of:

A) Oxygen

B) Carbon dioxide

C) Nitrogen

D) Sulfur dioxide

✅ Answer: A) Oxygen

9. Which gas is produced when a metal reacts with an acid?

A) Oxygen

B) Nitrogen

C) Hydrogen

D) Carbon dioxide

✅ Answer: C) Hydrogen

10. The process of coating iron with zinc to prevent rusting is called:

A) Alloying

B) Electroplating

C) Galvanization

D) Refining

✅ Answer: C) Galvanization

11. Which metal does not react with water at all?

A) Sodium

B) Magnesium

C) Copper

D) Potassium

✅ Answer: C) Copper

12. Which of the following is an amphoteric oxide?

A) Na₂O

B) MgO

C) Al₂O₃

D) Fe₂O₃

✅ Answer: C) Al₂O₃

13. Which metal is used in thermometers because of its high thermal conductivity?

A) Aluminium

B) Mercury

C) Copper

D) Zinc

✅ Answer: B) Mercury

14. What is the property of non-metals?

A) High melting point

B) Malleable

C) Ductile

D) Brittle

✅ Answer: D) Brittle

15. The metal which is the best conductor of electricity is:

A) Aluminium

B) Copper

C) Silver

D) Iron

✅ Answer: C) Silver

16. The reaction of metal oxides with acids produces:

A) Salt and water

B) Metal and oxygen

C) Acid and oxygen

D) Hydrogen gas

✅ Answer: A) Salt and water

17. Which metal is used in making electrical wires?

A) Iron

B) Zinc

C) Copper

D) Lead

✅ Answer: C) Copper

18. Which of the following metals is the least reactive?

A) Zinc

B) Iron

C) Copper

D) Gold

✅ Answer: D) Gold

19. Which of the following metals forms a green coating due to corrosion?

A) Iron

B) Aluminium

C) Copper

D) Gold

✅ Answer: C) Copper

20. The ability of metals to be drawn into thin wires is called:

A) Malleability

B) Ductility

C) Hardness

D) Conductivity

✅ Answer: B) Ductility

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Let me know if you need more MCQs or explanations!