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JEE Main & Advanced Chemistry Redox Reactions / रेडॉक्स अभिक्रियाएँ Question Bank Oxidation Reduction

  • question_answer
    In acid solution, the reaction \[MnO_{4}^{-}\,\to \,M{{n}^{2+}}\] involves [MP PMT 1989]

    A)                 Oxidation by 3 electrons

    B)                 Reduction by 3 electrons

    C)                 Oxidation by 5 electrons

    D)                 Reduction by 5 electrons

    Correct Answer: D

    Solution :

           \[MnO_{4}^{-}\to M{{n}^{2+}}\]. In this reaction \[5{{e}^{-}}\]are needed for the reduction of \[M{{n}^{2+}}\] as:                                 \[MnO_{4}^{-}+5{{e}^{-}}\to M{{n}^{2+}}\].


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