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

  • question_answer
    A system absorb 600J of heat and work equivalent to 300J on its surroundings. The change in internal energy is [Pb. PMT 2004]

    A)                 300 J     

    B)                 400 J

    C)                 500 J     

    D)                 600 J

    Correct Answer: A

    Solution :

               We know that \[\Delta E=Q+W\]\[=600+(-300)\]\[=300\,J\]                                 \[W=300\], because the work done by the system.


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