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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
    The most probable speed of 8 g of \[{{H}_{2}}\] is \[200\text{ }m{{s}^{-1}}\]. Average kinetic energy (neglect rotational and vibrational energy) of \[{{H}_{2}}\] gas is:

    A) 480 J               

    B) 240 J

    C) 120 J               

    D) none of these

    Correct Answer: B

    Solution :

    [b] \[200=\sqrt{\frac{2RT}{2\times {{10}^{-3}}}};\,RT=40\] Average K.E.\[=\frac{3}{2}nRT=\frac{3}{2}\times \frac{8}{2}\times 40=240J\]


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