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Grade: 11
        
Which of the following is a consequence of the second law of thermodynamics?
(A) Heat can flow only from high temperature to low temperature.
(B) Object in contact will tend toward having the same temperature.
(C) Any system that produces order from disorder must have an external influence.
3 years ago

Answers : (1)

Aditi Chauhan
askIITians Faculty
396 Points
							The correct option is (C).
In accordance to second law of thermodynamics, when changes occur due to external influence within a closed system its entropy either increases (for irreversible process) or remains constant (for reversible process). It never decreases. Entropy is often associated with disorder and the second law of thermodynamics is sometimes cast as a statement that the disorder of a closed system always increases. The final state, with the randomly directed motions of its molecules, is more disorder than the initial state, with the directed motions of a substantially large number of its molecules. Thus any system that produces order from disorder must have an external influence. Therefore option (C) is correct
3 years ago
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  • Discussion Forum
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