Author: Sameena Khan, New Delhi
1. Which metals are used to make electrical wires?
Ans. Copper and Aluminium
2. Which metal is liquid at room temperature?
Ans. Mercury
3. Which metals are poor conductor of heat and electricity?
Ans.Mercury and Tungsten
4. Which metals are called soft metals?
Ans. Sodium and Potassium
5. Which metals are used for making jewellery?
Ans. Gold, Silver and Platinum
6. Which metal is highly reactive?
Ans. Sodium
7. Which metals are not malleable and ductile?
Ans. Zinc, Arsenic and Antimony
8. Which metals have low melting and boiling points?
Ans. Sodium, Potassium and Mercury
9. Which metals have low densities?
Ans. Sodium and Potassium
10. Which metals are best conductor of heat?
Ans. Silver and Copper
11. Which metals are highly malleable metals?
Ans. Gold and Silver
12. Which metals are called noble metals?
Ans.Gold and Platinum
13. Which non-metal is essential to sustain life on earth?
Ans. Oxygen
14. Which non-metals are solid at room temperature?
Ans. Carbon, Sulphur and Phosphorus
15. Which non-metal is a good conductor of heat & electricity?
Ans. Graphite
16. Which non-metal is used in water purification process?
Ans.Chlorine
17. Which non-metal is liquid at room temperature?
Ans Bromine
18. Which non-metal is used to make semi-conductors?
Ans. Silicon
19. Which non-metal is used for making safety matches and fire works?
Ans. Phosphorus
20. Which alloy is used for making air-crafts?
Ans.Duralumin
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