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NEET Sample Paper NEET Sample Test Paper-40

  • question_answer
    The number of moles of\[KMn{{O}_{4}}\]reduced by one mole of KI in alkaline is:

    A)  one

    B)  two

    C)  five

    D)  one-fifth

    Correct Answer: A

    Solution :

     In alkaline medium, \[KMn{{O}_{4}}\]is reduced to \[{{K}_{2}}Mn{{O}_{4}}\] \[\overset{+7}{\mathop{2KMn{{O}_{4}}}}\,+2KOH\xrightarrow{{}}\overset{+6}{\mathop{2{{K}_{2}}Mn{{O}_{4}}}}\,+{{H}_{2}}O+[O]\] Hence, one mole of \[KMn{{O}_{4}}\]is reduced to one mole of KI.


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