MHT CET Physics question

Which of the following statements is correct for any thermodynamic system?

(A)The internal energy changes in all processes
(B)Internal energy and entropy are state functionsCorrect
(C)The change in entropy can never be zero
(D)The work done in adiabatic process is always zero

Answer: (B)

Solution

Internal energy and entropy depend only on the state of the system, so (b) is true; (a) is false (internal energy of an ideal gas does not change in an isothermal process),

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Question ID VK-063379