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A metal rod M was dipped in a coloured s...

A metal rod M was dipped in a coloured solution Y. After some time it was observed that the metal rod starts dissolving in the solution and the solution starts fading in colour. However, a coloured precipitate Z was seen at the bottom of the beaker. M, Y and Z could be

A

`M=Zn, Y=FeSO_(4), Z=Fe`

B

`M=Cu, Y=Al_(2)(SO_(4))_(3)Z=Al`

C

`M=Ag, Y=CuSO_(4), Z=Cu`

D

`M=Fe, Y=ZnSO_(4), Z=Zn`

Text Solution

Verified by Experts

The correct Answer is:
A
Zn lies above Fe in the reactivity series, hence it is more reactive than Fe and displaces Fe from `FeSO_(4)` solution.
`underset((M))(Zn_((s)))+underset((Y))(FeSO_(4(aq)))to ZnSO_(4(aq))+underset((Z))(Fe_((s)))`
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