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JEE Main & Advanced JEE Main Solved Paper-2014

  • question_answer
    The ratio of masses of oxygen and nitrogen in a particular gaseous mixture is 1 : 4. The ratio ofnumber of their molecule is :   JEE Main  Solved  Paper-2014

    A) 1 : 8                                       

    B) 3 : 16

    C) 1 : 4                                       

    D) 7 : 32

    Correct Answer: D

    Solution :

    \[\frac{{{n}_{{{O}_{2}}}}}{{{n}_{{{N}_{2}}}}}=\frac{{{W}_{{{O}_{2}}}}}{{{M}_{{{N}_{2}}}}}\times \frac{{{M}_{{{N}_{2}}}}}{{{W}_{{{N}_{2}}}}}=\frac{1}{4}\times \frac{28}{32}=\frac{7}{32}\]


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