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MHT CET Chemistry question

ChemistryRedox ReactionsMHT CET

In the preparation of , Pyrolusite () is first converted to potassium manganate (). In this conversion the oxidation state of manganese changes from

Answer: (D)

Solution

Manganese in MnO2 is +4 and in K2MnO4 is +6, so the change is +4 to +6; the

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Question ID VK-074358