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When NH4OH is added to copper sulphate s...

When `NH_4OH` is added to copper sulphate solution, blue colour is obtained due to formation of

A

`Cu(NH_(3))_(4)SO_(4)`

B

`Cu(NH_(4)SO_(4))_(2)`

C

`Cu(OH)_(2)`

D

`CuO`

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The correct Answer is:
A
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