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NEET Sample Paper NEET Sample Test Paper-67

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

    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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