If copper is kept in open air, it slowly loses its shining brown surfa – InterviewSolution

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1.	If copper is kept in open air, it slowly loses its shining brown surface and covered with a green colour coating. It is due to the formation of
Answer» `CuCO_(3)` `CUO+CuCO_(3)` `Cu(OH)_(2).CuCO_(3)` `CuO` ANSWER :C

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