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MHT CET Chemistry question

ChemistryRedox ReactionsMHT CET

An element in a compound has oxidation number . It is oxidized by in acidic medium. In the experiment mole of were used for mole of . The new oxidation number of after oxidation is :

Answer: (B)

Solution

Electrons gained by dichromate = mol; per mole of ABD this is , so A loses 3

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Question ID VK-065797