When copper utensils are kept open in humid air for a long time, a lig – McqOptions

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1.	When copper utensils are kept open in humid air for a long time, a light green substance accumulates on them. Which of the following is this green substance?
A.	copper hydroxide
B.	copper carbonate
C.	1 और 2 का मिश्रण
D.	none of these
Answer» D. none of these

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