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MGIMS WARDHA MGIMS WARDHA Solved Paper-2015

  • question_answer
    10 moles of ideal gas expand isothermally 60 and reversibly from a pressure of 10 atm to 1 atm at 300K. What is the largest mass which can lifted through a height of 100 meter?

    A)  48.75 kg              

    B)  58.55 kg

    C)  75.64 kg              

    D)  64.13 kg

    Correct Answer: B

    Solution :

                    \[W=-nRT\]in \[\frac{{{p}_{1}}}{{{p}_{2}}}\] \[=-10\times 8.314\times 300\,in\,\frac{10}{1}\] \[=-57441.42\text{ }J\] \[W=-mgh\] \[\therefore \] \[m\times 9.81\times 100=57441.42\] \[m=58.55kg\]


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