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CMC Medical CMC-Medical Ludhiana Solved Paper-2014

  • question_answer
    The gas in a vessel is subjected to a pressure of 20 atm at a temperature \[27{}^\circ C\]. The pressure of gas in a vessel after one-half of the gas is released from the vessel and the temperature of the remainder is raised by \[50{}^\circ C\] is

    A)  8.5 atm               

    B)  10.8 atm

    C)  11.7 atm             

    D)  17 atm

    Correct Answer: C

    Solution :

                    \[pV=\mu RT=\frac{m}{M}RT\] First case \[20\times V=\frac{m}{M}\times R\times 300\]                 ?(i) Second case \[p\,\times V=\frac{(m/2)}{M}\times R\times 350\]        ?(ii) From Eqs. (i) and (ii), we get \[p\,=\frac{140}{12}=11.7\,atm\]


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