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Subjects
Chemistry CBSE Live product
Class 10
Metals and non-metals
PT2 Revision - Metals and non-metals
10.
Corrosion and alloys
Question:
2
m.
Choose the best answer:
1
.
A copper statue placed in a garden develops a green coating over time. What is the chemical nature of this coating?
Copper chloride
Copper sulphide
Copper oxide
Copper carbonate
2.
Why is pure copper preferred in electrical wiring over bronze?
Bronze is heavier
Copper has higher electrical conductivity
Bronze is toxic
Copper is cheaper
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