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J & K CET Medical J & K - CET Medical Solved Paper-2003

  • question_answer
    50 ml, of hydrogen diffuses through small hole from a vessel in 20 min time. Time taken for 40 mL of oxygen to diffuse out under similar conditions will be:

    A)  12 min                                 

    B)  32 min

    C)  8 min                                   

    D)  64 min

    Correct Answer: D

    Solution :

                    \[\frac{{{r}_{{{H}_{2}}}}}{{{r}_{{{O}_{2}}}}}=\sqrt{\frac{{{M}_{{{O}_{2}}}}}{{{M}_{{{H}_{2}}}}}}\] \[\frac{50/20}{40/t}=\sqrt{\frac{32}{2}}\]                                             \[\left( \because r=\frac{V}{t} \right)\] \[\frac{t}{16}=4\Rightarrow t=64\,\min \]


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