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NEET Sample Paper NEET Sample Test Paper-56

  • question_answer
    If \[{{V}_{rms}}\]is\[30{{R}^{1/2}}\]at \[{{27}^{\circ }}C\], than the molar mass of the gas in kilogram is:

    A) 1                                 

    B) 2       

    C) 4                                 

    D) 0.001

    Correct Answer: D

    Solution :

    [d] 0.01 \[{{V}_{rms}}=\sqrt{\frac{3RT}{M}}\] \[\therefore {{\left( 30{{R}^{1/2}} \right)}^{2}}=\frac{3RT}{M}\] \[\Rightarrow 900R=\frac{3R\times 300}{M}\] \[or\,M=1g\,mo{{l}^{-1}}\] \[0.0001\,\,kg\,mo{{l}^{-1}}\]


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