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Copper becomes green when exposed to moi...

Copper becomes green when exposed to moist air for a long period. This is due to:

A

the formation of a layer of cupric oxide no the surface of copper.

B

the formation of basic copper sulphate layer on the surface of the metal

C

the formation of a layer of cupric hydroxide on the surface of copper

D

the formation of a layer of basic carbonate of copper on the surface of copper

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The correct Answer is:
D
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GRB PUBLICATION-SALT ANALYSIS-H: IInd Group Cations
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