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NEET Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank Self Evaluation Test - Thermodynamics

  • question_answer
    An ideal gas expands against a constant external pressure of 2.0 atmosphere from 20 litre to 40 litre and absorbs 10 kJ of heat from surrounding. What is the change in internal energy of the system? (given : 1 atm-litre = 101.3 J)

    A) 4052 J                          

    B) 5948 J

    C) 14052 J            

    D) 9940 J

    Correct Answer: B

    Solution :

    [b] \[\Delta U=q+w\] \[=10\times 1000-2\times \left( 20 \right)\times 101.3=5948\text{ }J\]


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