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Question

CuO+XCuSO4+H2O. Here (X) is

A
CuSO4
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B
HCl
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C
H2SO4
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D
HNO3
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Solution

The correct option is C H2SO4
CuO+H2SO4CuSO4+H2O. It undergoes double displacement reaction where the black copper oxide reacts with sulphuric acid to form a blue aqueous solution of copper sulphate and water.

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