Home Chemistry D and F - Block Elements General When copper is placed in the atmosphere for …
Chemistry D and F - Block Elements General Single Correct MCQ
Published on: August 13, 2026

When copper is placed in the atmosphere for sufficient time, a green crust is formed on its surface. The composition of the green crust is :

A
Cu(OH)2
B
CuO
C
CuCO3
D
CuCO3.Cu(OH)2

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Text Solution

Verified by Experts
The correct answer is:
D

Cu+ H2O + CO2 CuCO3.Cu(OH)2.

Green crust of basic copper carbonate is formed.

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