6. Which metal is used to make electrical wires?
a) Gold
b) Copper
c) Aluminum
d) Silver
Answer: b) Copper
7. Which metal is used to make coins?
a) Gold
b) Silver
c) Copper
d) Zinc
Answer: c) Copper
8. Which metal is used to make batteries?
a) Zinc
b) Aluminum
c) Copper
d) Iron
Answer: a) Zinc
9. Which metal is used to make mirrors?
a) Gold
b) Aluminum
c) Silver
d) Copper
Answer: c) Silver
10. Which metal is used to make stainless steel?
a) Iron
b) Aluminum
c) Copper
d) Chromium
Answer: d) Chromium
