Chemical Engineering MCQs

6108 MCQs  (Page 576 of 611)

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, b. and c
In case of an _______________ process, the temperature of the system increases?
A. Isothermal compression
B. Isothermal expansion
C. Adiabatic expansion
D. Adiabatic compression
A refrigerator may be termed as a____________________?
A. Heat pump
B. Heat engine
C. Carnot engine
D. None of these
When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is__________________?
A. More in vapour phase
B. More in liquid phase
C. Same in both the phases
D. Replaced by chemical potential which is more in vapour phase
Entropy of a substance remains constant during a/an ____________ change?
A. Reversible isothermal
B. Irreversible isothermal
C. Reversible adiabatic
D. None of these
In case of a close thermodynamic system, there is ______________ across the boundaries?
A. No heat and mass transfer
B. No mass transfer but heat transfer
C. Mass and energy transfer
D. None of these
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