NEET Chemistry Thermodynamics / रासायनिक उष्मागतिकी NEET PYQ-Thermodynamics

  • question_answer
    Identify the correct statement regarding entropy:                                                                   [AIPMT 1998]

    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 \[0{}^\circ C,\] 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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