Which of the following reactions does not involve either oxidation or reduction?

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VO2+→ V2O3

Na→ Na⊕

CrO42-→ Cr2O72-

Zn2+→ Zn

answer is C.

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Detailed Solution

Cr+6O42−→ Cr2+6O72−Since oxidation state of Cr in both reactant and product is same

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