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JIPMER Jipmer Medical Solved Paper-2015

  • question_answer
    Critical temperatures for A, B, C and D gases are \[25{}^\circ C,\]\[10{}^\circ C,\]\[-80{}^\circ C\]and\[15{}^\circ C\]respectively. Which gas will be liquefied more easily?

    A)  A               

    B)     B                           

    C)     C                                           

    D)     D

    Correct Answer: A

    Solution :

                    Critical temperature of gas may be defined as that temperature above which it cannot be liquefied howsoever high pressure may be applied on the gas. As we know, \[{{T}_{C}}=\frac{8a}{27\,Rb}\] where a = van der Waals constant which is a measure of intermolecular forces of attraction. Greater the value of a more easily the gas can be liquefied and hence larger\[{{T}_{C}}\], mean larger the value of a.               


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