1.

Compound A gives blue colour solution with excess of NH_(4)OH, it gives chocolate brown colour with K_(4)[Fe(CN)_(6)]. Complex A is :

Answer»

`CuSO_(4)`
`PbSO_(4)`
`ZnSO_(4)`
`BiCl_(3)`

Solution :`CuSO_(4).5H_(2)O`


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