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JEE Main & Advanced Chemistry States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव Question Bank Molecular speeds

  • question_answer
    The ratio between the root mean square velocity of H2 at 50 K and that of \[{{O}_{2}}\] at 800 K is            [IIT 1996]

    A)                 4             

    B)                 2

    C)                 1             

    D)                 ¼

    Correct Answer: C

    Solution :

    \[\frac{{{U}_{{{H}_{2}}}}}{{{U}_{{{O}_{2}}}}}=\sqrt{\frac{{{T}_{{{H}_{2}}}}}{{{M}_{{{H}_{2}}}}}.\frac{{{M}_{{{O}_{2}}}}}{{{T}_{{{H}_{2}}}}}}=\sqrt{\frac{50}{2}.\frac{32}{800}}=1\]


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