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Which of the following would dissolve in warm dilute H2...

Which of the following would dissolve in warm dilute H2SO4 without effervescence, to give a blue solution?

A.

Copper turnings

B.

Copper (ll) trioxocarbonate (IV)

C.

Copper (ll) oxide

D.

Copper alloy

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Correct answer is D

No explanation has been provided for this answer.

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