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Uttarakhand PMT Uttarakhand PMT Solved Paper-2009

  • question_answer
    The heat change at constant volume\[({{Q}_{V}})\]is equal to

    A)  \[\Delta E\]           

    B)  \[\Delta H\]

    C)  \[RT\]           

    D)  \[\Delta G\]

    Correct Answer: A

    Solution :

     From first law of thermodynamics, \[\Delta E=Q+W\] or       \[\Delta E=Q+p\Delta W\] At constant volume, \[\Delta V=0\] \[\therefore \] \[p\Delta V=0\] or            \[\Delta E={{Q}_{V}}\]


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