🏭Chemical Engineering MCQs
Chemical Engineering MCQs
496 MCQs51
Thermal efficiency of a Carnot engine can approach 100%, only when the temperature of the__________________?
Anor B
BHot reservoir approaches infinity
CEither
DNeither
52
The equation, PV = nRT, is best obeyed by gases at____________________?
ALow pressure & high temperature
BHigh pressure & low temperature
CLow pressure & low temperature
DNone of these
53
Gibbs-Helmholtz equation is__________________?
AΔF = ΔH + T [∂(ΔF)/∂T]P
BΔF = ΔH – TΔT
Cd(E – TS) T, V < 0
DdP/dT = ΔHvap/T.ΔVvap
54
Free energy change of mixing two liquid substances is a function of the__________________?
AConcentration of the constituents only
Band C
CTemperature only
DAll A,
55
In case of an _______________ process, the temperature of the system increases?
AIsothermal compression
BIsothermal expansion
CAdiabatic expansion
DAdiabatic compression
56
Adiabatic compression of a saturated water vapour makes it ____________________ ?
Anor B
BSuperheated
CBoth
DNeither
57
A refrigerator may be termed as a____________________?
AHeat pump
BHeat engine
CCarnot engine
DNone of these
58
When liquid and vapour phases of one component system are in equilibrium (at a given temperature and pressure), the molar free energy is__________________?
AMore in vapour phase
BMore in liquid phase
CSame in both the phases
DReplaced by chemical potential which is more in vapour phase
59
With increase in compression ratio, the efficiency of the otto engine________________?
AIncreases
BDecreases
CRemain constant
DIncreases linearly
60
A large iceberg melts at the base, but not at the top, because of the reason that_________________?
AIce at the base contains impurities which lowers its melting point
Band C
CThe iceberg remains in a warmer condition at the base
DAll A,