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JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank Mock Test - Chemical Thermodynamics

  • question_answer
    If 50 calories are added to a system and system does work of 30 calories on surroimdings, the change in internal energy of system is

    A) 20 cal

    B) 50 cal

    C) 40 cal 

    D) 30 cal

    Correct Answer: A

    Solution :

    [a] \[q=\Delta E+w\] \[50=\Delta E+30\] \[\therefore \Delta E=20\,cal\]      


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