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which of the following represent redox r...

which of the following represent redox reactions?
I. `Cr_(2)O_(7)^(2-)+2overset(ө)OHrarr2CrO_(4)^(2-)+H_(2)O`
II. `Zn+CuSO_(4)rarrZnSO_(4)+Cu`
III. `MnO_(4)^(ө)+3Mn^(2+)+4overset(ө)OHrarr5MnO_(2)+2H_(2)O`
IV. `2Cu^(o+)rarrCu+Cu^(2+)`

A

`I,II`

B

`I,III`

C

`III,IV`

D

`II,III,IV`

Text Solution

Verified by Experts

The correct Answer is:
D
`II, III and IV` are redox reactions.
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