Clausius-Clapeyron equation is applicable to ____ equilibrium processes:
A. Solid-vapor
B. Solid-liquid
C. Liquid-vapor
D. All A, B. and C
The four properties of a system viz. P, V, T, S are related by ____ equation:
A. Gibbs-Duhem
B. Gibbs-Helmholtz
C. Maxwell’s
D. None of these
Translational kinetic energy of molecules of an ideal gas is proportional to (where, T = absolute temperature of the gas):
A. T
B. √T
C. T2
D. 1/√T
One ton of refrigeration is defined as the heat rate corresponding to melting of one ton of ice in one:
A. Hour
B. Day
C. Minute
D. Second
4 kg moles of an ideal gas expands in vacuum spontaneously. The work done is:
A. 4 J
B. ∞
C. 0
D. 8 J
Specific/molar Gibbs free energy for a pure substance does not change during:
A. Sublimation
B. Vaporisation
C. Melting
D. Either A, B. or C.
The expression, nCv(T2 – T1), is for the _____ of an ideal gas:
A. Work done under adiabatic condition
B. Co-efficient of thermal expansion
C. Compressibility
D. None of these
Partial molar free energy of an element A in solution is same as its:
A. Chemical potential
B. Activity
C. Fugacity
D. Activity co-efficient
Entropy of the system decreases, when:
A. Snow melts into water
B. A gas expands spontaneously from high pressure to low pressure
C. Water is converted into ice
D. Both B. & C
The Maxwell relation derived from the differential expression for the Helmholtz free energy (dA) is:
A. (∂T/∂V)S = – (∂P/∂S)V
B. (∂S/∂P)T = – (∂V/∂T)P
C. (∂V/∂S)P = (∂T/∂P)S
D. (∂S/∂V)T = (∂P/∂T)V
