List of top Chemical, Thermal and Polymer Engineering Questions on Thermodynamics asked in CUET (PG)

Consider a piston-cylinder arrangement containing a gas. This system is heated by placing it on the top of a burner. The system undergoes:
As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches:
In an internal combustion engine, during the compression strokes, the heat rejected to the cooling water is 75 J/g and the work input is 120 J/g. The change in internal energy of the working fluid is:
If the temperature of a saturated water is increased infinitesimally at constant entropy, the resulting state of water is:
A gaseous system contains \( H_1 \), \( H_2 \), and \( I_2 \) which participate in the gas phase reaction: \[ 2H_1 \rightleftharpoons H_2 + I_2 \] At a state of reaction equilibrium, the number of thermodynamic degrees of freedom is:
From the following list, identify the properties which are equal in both vapor and liquid phases at equilibrium:
(A) Temperature
(B) Density
(C) Enthalpy
(D) Chemical potential
Choose the \textbf{correct} answer from the options given below:
For a pure substance, the Maxwell's relation obtained from the fundamental property relation \( dU = T dS - P dV \) is:
For a pure substance, which of the following does not change during condensation?
Which of the following conditions is not satisfied by an ideal solution?
The approach of the thermodynamic temperature scale is based on:
A. heat engine operating according to Carnot cycle
B. behaviour of a perfect gas
C. behaviour of an ideal liquid
D. principle of reversed heat engine
Which of the following statements is true?
For estimation of heat capacity of a solid compound, one can use

Match List-I with List-II:

List-IList-II
(A) Heat(I) State function
(B) Internal energy(II) Path function
(C) Work 
(D) Entropy 
Which of the following statements is not valid for an ideal solution?
Fugacity is most suitable for
Hess’s law of constant heat summation is based on:
Gibbs free energy of mixing at constant temperature and pressure must always be
For a reversible process at constant pressure and temperature, the free energy change is
Molar entropy of vaporization at normal boiling point in J/K·mole is:
The direction of a particular spontaneous process is ascertained from which of the following Laws of Thermodynamics?
Which of the following is not an example of a closed system?
At a triple point, the number of phases present are