CTET 2 Math and Science 20 Dec 2021 Paper

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Question : 63 of 150

Marks: +1, -0

It is observed that a Copper vessel gets corroded in rainy season to give

reddish brown coating of Copper oxide and Copper hydroxide
greenish coating of Copper hydroxide and Copper Carbonate
white coating of Copper Carbonate and Copper Oxide
green coating of Copper Sulphide and Copper Carbonate

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