Q.

Which of the following statements is correct for any thermodynamic system

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a

The internal energy changes in all processes

b

Internal energy and entropy are state functions

c

The change in entropy can never be zero

d

The work done in an adiabatic process is always zero

answer is B.

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Detailed Solution

The internal energy and entropy depend only on the initial and final states of the system and not on the path followed to attain that state. 

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