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InterviewSolution
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63. Which law states entropy of all pure crystalline solids is(CPMT 2001)zero at absolute zero?(a) First law of thermodynamics(b) Second law of thermodynamics(c) Third law of thermodynamics(d) Hess's law |
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Answer» The third law of thermodynamics states that the entropy of a system at absolute zero is a well-defined constant. This is because a system at zero temperature exists in its ground state, so that its entropy is determined only by the degeneracy of the ground state. Option C is correct.. |
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