JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank First law of thermodynamics and Hess law

  • question_answer
    If gas, at constant temperature and pressure expands then its [MH CET 2003]

    A)                 Entropy increases and then decreases

    B)                 Internal energy increases

    C)                 Internal energy remains the same

    D)                 Internal energy decreases

    Correct Answer: C

    Solution :

                    We know that internal energy of a gas depends upon its pressure and temperature. Thus if a gas expands at constant temperature and pressure, then its internal energy remains same.


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