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Neha, a class VIII stuents arranged the ...

Neha, a class VIII stuents arranged the following experimental set-up and observed the changes carefully.

On the basif of her observations identify the correct order of reactivity.

A

`Zn gt Cu gt Fe`

B

`Zn gt Fe gt Cu`

C

`Fe gt Zn gt Cu`

D

`Cu gt Fe gt Zn`

Text Solution

Verified by Experts

The correct Answer is:
B
`Fe+underset(("blue"))(CuSO_(4)) to underset(("green"))(FeSO_(4))+Cu`
Fe is more reactive than Cu.
`Cu+ZnSO_(4) to `No reaction
Cu is less reactive than Zn.
`Zn+underset(("green"))(FeSO_(4)) to underset(("colourless"))(ZnSO_(4))+Fe`
Zn is more reactive than Fe.
THus, the reactivity order is `Zn gt Fe gt Cu`.
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