Molar heat capacity of water in equilibrium with ice at constant pressure is ____ Kcal/kg mole. °K:
A. 0
B. ∞
C. 50
D. 100
The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume predicted by ideal gas law):
A. V1/V2
B. V2/V1
C. V1 – V2
D. V1.V2
The freezing point of a liquid decreases when the pressure is increased, if the liquid ____ while freezing:
A. Contracts
B. Expands
C. Does not change in volume
D. Either (A), B. or (C)
The number of degrees of freedom for an azeotropic mixture in a two component vapour liquid equilibria is/are:
A. Zero
B. One
C. Two
D. Three
For any system, what is the minimum number of degrees of freedom:
A. 0
B. 1
C. 2
D. 3
What is the degree of freedom for two miscible (non-reacting) substances in vapor-liquid equilibrium forming an azeotrope:
A. 0
B. 1
C. 2
D. 3
Which of the following liquid metals has the highest thermal conductivity:
A. Molten sodium
B. Molten lead
C. Mercury
D. Molten potassium
High ____ is an undesirable property for a good refrigerant:
A. Specific heat
B. Latent heat of vaporisation
C. Viscosity
D. Specific vapor volume
Specific ____ does not change during phase change at constant temperature and pressure:
A. Entropy
B. Gibbs energy
C. Internal energy
D. Enthalpy
A change in state involving a decrease in entropy can be spontaneous, only if:
A. It is exothermic
B. It is isenthalpic
C. It takes place isothermally
D. It takes place at constant volume
