Home Chemistry D and F - Block Elements NTA Abhiyas Question Copper becomes green when exposed to moist a…
Chemistry D and F - Block Elements NTA Abhiyas Question Single Correct MCQ
Published on: August 13, 2026

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

A
The formation of a layer of cupric hydroxide on the surface of copper.
B
The formation of a layer of basic carbonate of copper on the surface of copper.
C
The formation of basic copper sulphate layer on the surface of the metal.
D
The formation of a layer of cupric oxide on the surface of copper.

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The correct answer is:
B
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