JEE Main & Advanced Physics Kinetic Theory of Gases Question Bank Self Evaluation Test - Kinetic Theory

  • question_answer
    At room temperature a diatomic gas is found to have an r. m. s. speed of \[1930\text{ }m{{s}^{-1}}\]. The gas is:

    A) \[{{H}_{2}}\]

    B) \[C{{l}_{2}}\]

    C) \[{{O}_{2}}\]

    D) \[{{F}_{2}}\]

    Correct Answer: A

    Solution :

    [a] \[\therefore C=\sqrt{\frac{3RT}{M}}\]  \[{{\left( 1930 \right)}^{2}}=\frac{3\times 8.314\times 300}{1930\times 1930}\approx 2\times {{10}^{-3}}kg\] The gas is \[{{H}_{2}}.\]


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