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  3. JEE Main & Advanced

JEE Main & Advanced Sample Paper JEE Main Sample Paper-29

  • question_answer
    Out of following, in which process \[\Delta {{S}_{system}}\]is negative?

    A) Mixing of gases

    B) Stretching of rubber

    C) Expansion of gas in vacuum

    D) Dissociation of \[PC{{l}_{5}}\]

    Correct Answer: B

    Solution :

    In stretching of rubber, \[\frac{6!}{2!2!}\,=180\,\,\,\,\,\,\,\,\,\,\,\times \times \times \times \times \times 5\] is -ve


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