CBSE Class 10 Science 2020 · Paper 31/C/1 · Question 6
Copper utensils slowly lose their shiny brown surface and gain a green coat on prolonged exposure to atmospheric air. This is due to the formation of a coating of
- (a)Copper sulphate
- (b)Copper carbonate
- (c)Cupric oxide
- (d)Cuprous oxide
Answer
(b) Copper carbonate
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