Q: When copper reacts with moist carbon dioxide (CO₂) in air, it forms a green coating of which one of the following compounds?
(a)Cupric carbonate
(b)Cuprous oxide
(c)Cupric oxide
(d)Copper sulphate
Correct Answer: (a)
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Q: When copper reacts with moist carbon dioxide (CO₂) in air, it forms a green coating of which one of the following compounds?
Correct Answer: (a)