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If an iron rod is dipped into a solution...

If an iron rod is dipped into a solution of `CuSO_(4)` , the blue colour of the solution gradually fades away . Why ?

A

blue colour of the solution turns green.

B

brown layer is deposited on iron rod .

C

no change occurs in the colour of the solution .

D

blue colour of the solution vanishes.

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The correct Answer is:
A
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