The necessary condition for phase equilibrium in a multiphase system of N components is that the____________________?
(A) Chemical potentials of a given component should be equal in all phases
(B) Chemical potentials of all components should be same in a particular phase
(C) Sum of the chemical potentials of any given component in all the phases should be the same
(D) None of these
_____________ calorimeter is normally used for measuring the dryness fraction of steam, when it is very low?
(A) Bucket
(B) Throttling
(C) Separating
(D) A combination of separating & throttling
As the temperature is lowered towards the absolute zero, the value of the quantity (∂ΔF/∂T) approaches________________?
(A) Zero
(B) Unity
(C) Infinity
(D) None of these
Pick out the wrong statement pertaining to the decomposition of PCl5 represented by, PCl5 ⇌ PCl3 + Cl2.Degree of dissociation of PCl5 will_________________?
(A) Decrease on addition of Cl2
(B) Increase on addition of an inert gas at constant pressure
(C) Decrease on increasing the pressure of the system
(D) None of these
The expression, nRT ln(P1/P2), is for the _____________of an ideal gas?
(A) Compressibility
(B) Work done under adiabatic condition
(C) Work done under isothermal condition
(D) Co-efficient of thermal expansion
Critical compressibility factor for all substances___________________?
(A) Are more or less constant (vary from 0.2 to 0.3)
(B) Vary as square of the absolute temperature
(C) Vary as square of the absolute pressure
(D) None of these
Internal energy change of a system over one complete cycle in a cyclic process is__________________?
(A) Zero
(B) +ve
(C) -ve
(D) Dependent on the path
The equation, PV = nRT, is best obeyed by gases at____________________?
(A) Low pressure & high temperature
(B) High pressure & low temperature
(C) Low pressure & low temperature
(D) None of these
Gibbs-Helmholtz equation is__________________?
(A) ΔF = ΔH + T [∂(ΔF)/∂T]P
(B) ΔF = ΔH – TΔT
(C) d(E – TS) T, V < 0
(D) dP/dT = ΔHvap/T.ΔVvap
Free energy change of mixing two liquid substances is a function of the__________________?
(A) Concentration of the constituents only
(B) Quantities of the constituents only
(C) Temperature only
(D) All A,