๐ญChemical Engineering MCQs
Chemical Engineering MCQs
496 MCQs41
The expression, nRT ln(P1/P2), is for the _____________of an ideal gas?
ACompressibility
BWork done under adiabatic condition
CWork done under isothermal condition
DCo-efficient of thermal expansion
42
Critical compressibility factor for all substances___________________?
AAre more or less constant (vary from 0.2 to 0.3)
BVary as square of the absolute temperature
CVary as square of the absolute pressure
DNone of these
43
Entropy of an ideal gas depends upon its__________________?
Anor B
BTemperature
CBoth
DNeither
44
Internal energy change of a system over one complete cycle in a cyclic process is__________________?
AZero
B+ve
C-ve
DDependent on the path
45
In case of the decomposition of hydroiodic acid (2HI โ H2 + I2), addition of H2 (at equilibrium condition) will__________________?
AIncrease the partial pressure of I2
BDecrease the partial pressure of HI
CDiminish the degree of dissociation of HI
DNone of these
46
Entropy of a substance remains constant during a/an ____________ change?
AReversible isothermal
BIrreversible isothermal
CReversible adiabatic
DNone of these
47
In case of a close thermodynamic system, there is ______________ across the boundaries?
ANo heat and mass transfer
BNo mass transfer but heat transfer
CMass and energy transfer
DNone of these
48
The chemical potential of a component (ฮผi) of a phase is the amount by which its capacity for doing all work, barring work of expansion is increased per unit amount of substance added for an infinitesimal addition at constant temperature and pressure. It is given by_________________?
A,
Band (
C(โH/โni)S, P, nj
DAll (
49
The necessary condition for phase equilibrium in a multiphase system of N components is that the____________________?
AChemical potentials of a given component should be equal in all phases
BChemical potentials of all components should be same in a particular phase
CSum of the chemical potentials of any given component in all the phases should be the same
DNone of these
50
_____________ calorimeter is normally used for measuring the dryness fraction of steam, when it is very low?
ABucket
BThrottling
CSeparating
DA combination of separating & throttling