Q.

Which of the following statement (s) is/are correct?
Statement-1: The entropy of isolated system with P-V work only, is always maximized at equilibrium.
Statement-2: It is possible for the entropy of closed system to decrease substantialy in an irreversible process.
Statement-3: Entropy can be created but not destroyed.
Statement-4: ΔSsystem  is zero for reversible process in an isolated system.

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a

All of these

b

Statement 2, 4

c

Statement 1, 2, 4

d

Statement 1, 2, 3

answer is D.

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Detailed Solution

Here all the given statements are true. 

The entropy of isolated system with P-V work only, is always maximized at equilibrium.
 It is possible for the entropy of closed system to decrease substantialy in an irreversible process.
By second law of thermodynamics it can be said that entropy can be created but not destroyed.
 ΔSsystem  is zero for reversible process in an isolated system.

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Which of the following statement (s) is/are correct?Statement-1: The entropy of isolated system with P-V work only, is always maximized at equilibrium.Statement-2: It is possible for the entropy of closed system to decrease substantialy in an irreversible process.Statement-3: Entropy can be created but not destroyed.Statement-4: ΔSsystem  is zero for reversible process in an isolated system.