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JCECE Medical JCECE Medical Solved Paper-2006

  • question_answer
    Ratio of kinetic energy of hydrogen and helium gas at \[\text{300}\,\text{K}\]is:

    A)  2 : 1         

    B)  4 : 5

    C)  1 : 1         

    D)  1 : 2

    Correct Answer: C

    Solution :

     \[\text{KE =}\,\frac{3}{2}nRT\] \[KE\propto n\] \[KE\propto \frac{w}{M}\] \[\frac{{{K}_{{{H}_{2}}}}}{{{K}_{He}}}=\frac{{{M}_{He}}}{{{M}_{{{H}_{2}}}}}=\frac{2}{2}=\frac{1}{1}\] \[K{{E}_{{{H}_{2}}}}:K{{E}_{He}}=-1:1\]


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