JEE Main & Advanced AIEEE Paper (Held On 11 May 2011)

  • question_answer
    When r, P and M represent rate of diffusion, pressure and molecular mass, respectively, then the ratio of the rates of diffusion \[({{r}_{A}}/{{r}_{B}})\]of two gases A and B, is given as:     AIEEE  Solved  Paper (Held On 11 May  2011)

    A) \[({{P}_{A}}/{{P}_{B}}){{({{M}_{\text{B}}}/{{M}_{A}})}^{1/2}}\]                

    B) \[{{({{P}_{A}}/{{P}_{B}})}^{1/2}}({{M}_{\text{B}}}/{{M}_{A}})\]

    C) \[({{P}_{A}}/{{P}_{B}}){{({{M}_{\text{A}}}/{{M}_{\text{B}}})}^{1/2}}\]                  

    D) \[{{({{P}_{A}}/{{P}_{B}})}^{1/2}}({{M}_{\text{A}}}/{{M}_{\text{B}}})\]

    Correct Answer: A

    Solution :

    Sol                         \[r\propto \frac{p}{\sqrt{M}}\]                 \[\frac{{{r}_{A}}}{{{r}_{B}}}=\frac{{{p}_{A}}}{{{p}_{B}}}\sqrt{\frac{{{M}_{B}}}{{{M}_{A}}}}\]


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