JEE Main & Advanced Sample Paper JEE Main Sample Paper-20

  • question_answer
    What mass of \[{{H}_{2}}(g)\] is needed to reduce\[192gm\]of \[Mo{{O}_{3}}\] to metal? [At. wt. of \[Mo=96\]]

    A)  \[8\,gm.\]                     

    B)  \[16\,gm.\]

    C)  \[32\,gm.\]                   

    D)  None of these

    Correct Answer: A

    Solution :

    Equivalent of \[Mo{{O}_{3}}=\frac{M}{6}=\frac{144}{6}=24\] equivalent of \[{{H}_{2}}:\frac{192}{24}=\frac{{{W}_{{{H}_{2}}}}}{1}\Rightarrow {{W}_{{{H}_{2}}}}=8gm.\]


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