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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 8

  • question_answer
    On reduction of \[KMn{{O}_{4}}\] by oxalic acid in acidic medium, the oxidation number of Mn changes. What is the magnitude of this change?

    A) From 7 to 2           

    B) From 6 to 2

    C) From 5 to 2        

    D) From 7 to 4

    Correct Answer: A

    Solution :

    In acidic medium \[MnO_{4}^{-}\] changes to \[M{{n}^{2+}},\] hence O.N. changes from \[+7\] to\[+2\].


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