A gas has a volume of 27.3 c.c. at 0°C. Its volume at 10°C (if pressure remains unchanged) will be _____________ c.c?
(A) 2.73
(B) 28.3
(C) 273
(D) 283
The second law of thermodynamics states that___________________?
(A) The energy change of a system undergoing any reversible process is zero
(B) It is not possible to transfer heat from a lower temperature to a higher temperature
(C) The total energy of system and surrounding remains the same
(D) None of the above
The work done in isothermal compression compared to that in adiabatic compression will be__________________?
(A) Less
(B) More
(C) Same
(D) More or less depending upon the extent of work done
Which of the following is true for Virial equation of state ?
(A) Virial co-efficients are universal constants
(B) Virial co-efficients ‘B’ represents three body interactions
(C) Virial co-efficients are function of temperature only
(D) For some gases, Virial equations and ideal gas equations are the same
Out of the following refrigeration cycles, which one has maximum COP ?
(A) Air cycle
(B) Carnot cycle
(C) Ordinary vapor compression cycle
(D) Vapor compression with a reversible expansion engine
All gases except ____________ shows a cooling effect during throttling process at atmospheric temperature and pressure?
(A) Oxygen
(B) Nitrogen
(C) Air
(D) Hydrogen
Gibbs free energy per mole for a pure substance is equal to the__________________?
(A) Latent heat of vaporisation
(B) Chemical potential
(C) Molal boiling point
(D) Heat capacity
Joule-Thomson co-efficient is defined as__________________?
(A) μ = (∂P/∂T)H
(B) μ = (∂T/∂P)H
(C) μ = (∂E/∂T)H
(D) μ = (∂E/∂P)H
During Joule-Thomson expansion of gases_________________?
(A) Enthalpy remains constant
(B) Entropy remains constant
(C) Temperature remains constant
(D) None of these
As pressure approaches zero, the ratio of fugacity to pressure (f/P) for a gas approaches____________________?
(A) Zero
(B) Unity
(C) Infinity
(D) An indeterminate value