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JEE Main & Advanced Chemistry Thermodynamics / रासायनिक उष्मागतिकी Question Bank 2nd and 3rd law of thermodynamics and Entropy

  • question_answer
    A heat engine absorbs heat \[{{Q}_{1}}\] at temperature \[{{T}_{1}}\] and heat \[{{Q}_{2}}\] at temperature \[{{T}_{2}}\]. Work done by the engine is \[({{Q}_{1}}+{{Q}_{2}})\]. This data      [AIEEE 2002]

    A)                 Violates Ist law of thermodynamics

    B)                 Violates Ist law of thermodynamics if \[{{Q}_{1}}\] is ?ve

    C)                 Violates Ist law of thermodynamics if \[{{Q}_{2}}\] is ?ve

    D)                 Does not violate Ist law of thermodynamics

    Correct Answer: D

    Solution :

                    It does not violates the first law of thermodynamics but violates the II law of thermodynamics.


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