NEET AIPMT SOLVED PAPER 1998

  • question_answer
                    Identify the correct statement regarding entropy:                                          

    A)                 At absolute zero temperature, entropy of a perfectly crystalline substance is taken to be zero

    B)                 At absolute zero of temperature the entropy of a perfectly crystalline substance is +ve

    C)                 At absolute zero of temperature the entropy of all crystalline substance is to be zero

    D)                 At \[{{0}^{\text{o}}}C,\] the entropy of a perfectly crystalline substance is taken to be zero

    Correct Answer: A

    Solution :

                    At absolute zero temperature, entropy of a perfectly crystalline substance is taken to be zero.                 It is called third law of thermodynamics.


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