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11th Class Physics Thermodynamical Processes Question Bank Critical Thinking

  • question_answer
    Adsorption of gases on solid surface is generally exothermic because     [IIT JEE (Screening) 2004]

    A)                 Enthalpy is positive        

    B)                 Entropy decreases

    C)                 Entropy increases           

    D)                 Free energy increase

    Correct Answer: B

    Solution :

                    Due to randomness of particles is reduced since entropy decreases.


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