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WORKSHEET -1 HALFYEARLY
1. Which of the
following is a property of metals?
a.
a) Ductility b) Brittle c) Poor conductor of heat d) Non-malleable
2. Which metal
is the best conductor of electricity?
a)
Iron b) Copper c) Silver d) Aluminium
3. Which
non-metal is essential for life?
a.
a) Carbon b) Sulfur
c) Phosphorus d) Nitrogen
4. Which of the
following is a metalloid?
a.
a) Carbon b) Silicon c) Oxygen d) Phosphorus
5.What is the
nature of oxides of non-metals?
a)
Acidic b) Basic c) Amphoteric d) Neutral
6. Which of the
following metals reacts vigorously with cold water?
a)
Copper b) Magnesium c) Sodium d) Zinc
7. Which metal
is used to galvanize iron?
a.
a) Zinc b) Lead
c) Tin d) Aluminium
8. Which of the
following is an example of a displacement reaction?
a.
a) 2H₂ + O₂ → 2H₂O b) CuSO₄ + Fe
→ FeSO₄ + Cu
b.
c) NaCl + AgNO₃ → NaNO₃ + AgCl d) 2Mg + O₂ → 2MgO
9. Which metal
does not react with dilute hydrochloric acid?
a.
a) Zinc b) Aluminium c) Iron d) Copper
10. Which
non-metal is used in the purification of water?
a.
a) Chlorine b) Sulfur c) Phosphorus d) Oxygen
11.Which of the
following metal oxides is amphoteric?
a.
a) Sodium oxide b) Magnesium oxide c) Aluminium oxide d) Calcium oxide
12. What happens
when a metal reacts with an acid?
a.
a) Hydrogen gas is evolved b) Oxygen gas is evolved
b.
c) Water is formed d) Carbon
dioxide is formed
13. Which metal
is used in making electrical wires?
a.
a) Iron b) Copper c) Silver d) Gold
14.Which
non-metal is used in the manufacturing of matchsticks?
a.
a) Phosphorus b) Sulfur c) Carbon d) Nitrogen
15. What is formed
when a metal reacts with oxygen?
a.
a) Metal oxide b) Metal carbonate c) Metal hydroxide d) Metal sulfate
16. Which of the
following metals is found in the liquid state at room temperature?
a.
a) Sodium b) Potassium c) Mercury d)
Iron
17. Which of the
following metals can be easily cut with a knife?
a.
a) Iron b) Sodium c) Zinc d) Copper
18. Which gas is
produced when zinc reacts with dilute sulfuric acid?
a.
a) Oxygen b) Hydrogen c) Nitrogen d) Carbon dioxide
19.Which
non-metal is a good conductor of electricity?
a.
a) Carbon (in the form of graphite) b) Sulfur c) Phosphorus d) Chlorine
20. Which metal
is the most reactive?
a.
a) Gold b) Silver c) Potassium d) Iron
21.Which
process is used for the extraction of metals from their ores?
a.
a) Refining b) Smelting c) Galvanization d) Alloying
22.Which of the
following metals does not corrode easily?
a.
a) Aluminium b) Copper c) Gold d) Iron
23.Which of the
following is a noble gas?
a.
a) Helium b) Oxygen c) Nitrogen d) Chlorine
24. What is the
process of coating iron with zinc called?
a.
a) Alloying b) Smelting c) Galvanization d) Refining
25. Which metal
is used in the making of batteries?
a. a) Iron b) Copper c) Lead d) Gold
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