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

  • question_answer
    An ideal gas at constant temperature and pressure expands, then its     [BHU 1998]

    A)                 Internal energy remains same

    B)                 Internal energy decreases

    C)                 Internal energy increases

    D)                 Entropy first increases and then decreases

    Correct Answer: A

    Solution :

                    At constant T and P internal energy of ideal gas remains unaffected.


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