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In the following change,KMnO₄ → MnO₂, the oxidation state of Mn changes as

In the following change,KMnO₄ → MnO₂, the oxidation state of Mn changes as

Options

(a) 7 → 4
(b) 5 → 2
(c) 7 → 5
(d) 3 → 7

Correct Answer:

7 → 4

Explanation:

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