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We observe blue colour if:...

We observe blue colour if:

A

Cu electrode is placed in the `AgNO_(3)` solution

B

Cu electrode is placed in the `ZnSO_(4)`

C

Cu electrode is placed in the dil `HNO_(3)`

D

Cu electrode is placed in the `NiSO_(4)`

Text Solution

Verified by Experts

The correct Answer is:
A, C
Due to formation of `Cu^(2+)` ions in the solution
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