🏭Chemical Engineering MCQs
Chemical Engineering MCQs
496 MCQs161
On opening the door of an operating refrigerator kept in a closed room, the temperature of the room will____________________?
AIncrease
BDecrease
CRemain same
DIncrease in summer and will decrease in winter
162
The principle applied in liquefaction of gases is_____________________?
Anor B
BJoule-Thomson effect
CBoth
DNeither
163
Free energy, fugacity and activity co-efficient are all affected by change in the temperature. The fugacity co-efficient of a gas at constant pressure ______________ with the increase of reduced temperature?
ADecreases
BIncreases
CRemains constant
DDecreases logarithmically
164
Entropy change of the reaction, H2O (liquid) → H2O (gas), is termed as the enthalpy of___________________?
ASolution
BVaporisation
CFormation
DSublimation
165
The effect of changing the evaporator temperature on COP as compared to that of changing the condenser temperature (in vapour compression refrigeration system) is__________________?
ALess pronounced
BMore pronounced
CEqual
DData insufficient, can’t be predicted
166
What happens in a reversible adiabatic expansion process ?
AHeating takes place
BCooling takes place
CPressure is constant
DTemperature is constant
167
Number of phases in a colloidal system is_____________________?
A1
B2
C3
D4
168
Isotherm on an enthalpy-concentration diagram, for an ideal solution will be a __________________?
AStraight line
BSine curve
CParabola
DHyperbola
169
What is the value of Joule-Thomson co-efficient for an ideal gas ?
A+ve
B-ve
C0
D∞
170
Co-efficient of performance for a reversed Carnot cycle working between temperatures T1 and T2 (T1 > T2) is ___________________?
AT2/(T1 – T2)
BT1/(T1 – T2)
C(T1 – T2)/T1
D(T1 – T2)/T2