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NEET Sample Paper NEET Sample Test Paper-91

  • question_answer
    Number of electrons transfered in each case when \[KMn{{O}_{4}}\] acts as an oxidising agent to give \[Mn{{O}_{2}},\] \[M{{n}^{2+}},\] and \[Mn_{4}^{2-}\] are respectively

    A) 3, 5, 4 and 1     

    B)        4, 3, and 5

    C) 1, 3, 4 and 5     

    D)        5, 4, 3 and 1

    Correct Answer: A

    Solution :

    [a]
    \[KMn{{O}_{4}}\] \[Mn{{O}_{2}}\] \[M{{n}^{2+}}\] \[Mn{{(OH)}_{3}}\] \[MnO_{4}^{2-}\]
    O.S of Mn +7 +4 +2 +3 +6
    electrons needed 0 3 5 4 1


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