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NEET Chemistry States of Matter / पदार्थ की अवस्थाएँ - गैस एवं द्रव Question Bank Self Evaluation Test - States of Matter

  • question_answer
    By how many folds the temperature of a gas would increase when the root mean square velocity of the gas molecules in a container of fixed volume is increased from \[5\times {{10}^{4}}cm/s\] to \[10\times {{10}^{4}}cm/s\]?

    A) Two                             

    B) Three

    C) Six                               

    D) Four

    Correct Answer: D

    Solution :

    [d] r.m.s. velocity \[{{V}_{rms}}=\sqrt{\frac{3RT}{M}}\] i.e., \[\frac{{{V}_{1}}}{{{V}_{2}}}=\sqrt{\frac{{{T}_{1}}}{{{T}_{2}}}}\] \[\frac{5\times {{10}^{4}}}{10\times {{10}^{4}}}=\frac{1}{2}=\sqrt{\frac{{{T}_{1}}}{{{T}_{2}}}}\] \[\therefore {{T}_{2}}=4{{T}_{1}}\]


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