JEE Main & Advanced Chemistry States of Matter Question Bank Kinetic molecular theory of gases and Molecular collisions

  • question_answer The density of a gas An is three times that of a gas B. if the molecular mass of A is M, the molecular mass of B is [CPMT 1987]

    A)                 3 M       

    B)                 \[\sqrt{3}\]M

    C)                 \[M/3\]               

    D)                 \[M/\sqrt{3}\]

    Correct Answer: C

    Solution :

                    \[d\propto M\] Þ  \[\frac{{{d}_{1}}}{{{d}_{2}}}=\frac{{{M}_{1}}}{{{M}_{2}}}\]; \[\frac{3d}{d}=\frac{M}{{{M}_{2}}}\] ; \[{{M}_{2}}=\frac{M}{3}\].

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