greenish layer appears on the copper utensils if they are not cleaned for a few days .assign reasons
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4
Answer:
Because copper utensils cover with just like rust
Explanation:
Due to presence oxygen in nature
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3
Answer:
When a copper object remains in damp air for a long time, it reacts slowly with carbon dioxide and water of air. It loses its shine due to formation of a green coating of copper hydroxide and copper carbonate on the surface of the object.
Explanation:
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