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If copper is kept open in air, it slowly...

 If copper is kept open in air, it slowly loses its shining brown surface and gains a green coating. It is due to the formation of 

A

`CuSO_(4)`

B

`CuCO_(3)`

C

`Cu(NO_(3))_(2)`

D

CuO

Text Solution

Verified by Experts

The correct Answer is:
B
Copper gets blacken because of formation of a layer of carbonate gets blacken because of formation of a layer of carbonate over it due to reaction with carbon dioxide gas present in air. This is called tarnishing of copper.
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