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JEE Main & Advanced Sample Paper JEE Main - Mock Test - 11

  • question_answer
    M is the molecular mass of\[KMn{{O}_{4}}\]. The equivalent mass of \[KMn{{O}_{4}}\] when it is converted into \[{{K}_{2}}Mn{{O}_{4}}\] is

    A)  M                   

    B)  M/3 

    C) M/5

    D)  M/7

    Correct Answer: A

    Solution :

    [a]: \[KMn{{O}_{4}}\to {{K}_{2}}Mn{{O}_{4}}\] Equivalent weight of \[KMn{{O}_{4}}\] \[=\frac{\text{Molecular weight}}{\text{Change in oxidation number}}=\text{M}\]


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