1.

Which of the following reactions does not involve either oxidation or reduction ?A. `VO^(2+)rarrV_(2)O_(3)`B. `NararrNa^(o+)`C. `CrO_(4)^(2-)rarrCr_(2)O_(7)^(2-)`D. `Zn^(2+)rarrZn`

Answer» Correct Answer - C
`overset(+6)(Cr)O_(4)^(2-)rarroverset(+6)(Cr_(2))O_(7)^(2-)`
Since oxidation state of `Cr` in both reactant and product is same.


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