31.
The Maxwell relation derived from the differential expression for the Helmholtz free energy (dA) is

32.
Which of the following processes can not be made reversible even under ideal condition of operation?

33.
Heat is added at constant pressure in an ideal __________ cycle.

34.
Heat is added at constant temperature in an ideal __________ cycle.

35.
The standard state of a gas (at a given temperature) is the state in which fugacity is equal to

37.
Which of the following is not a common refrigerant?

38.
Which of the following is not a reversible process ?

39.
For spontaneous changes in an isolated system (S = entropy)

40.
A gas performs the maximum work, when it expands

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