🏭Chemical Engineering MCQs
Chemical Engineering MCQs
496 MCQs351
Disappearance of snow in subzero weather exemplifies the process of_________________?
AEvaporation
BSublimation
CVaporisation
DMelting
352
The equilibria relations in a multi-component and multiphase system cannot be calculated with the help of the_______________?
APhase rule
BExperimental data
CEmpirical equations
DTheoretical equations
353
Solutions which distil without change in composition are called________________?
AIdeal
BSaturated
CSupersaturated
DAzeotropic
354
In osmosis through a semi-permeable membrane, diffusion of the___________________?
ASolvent is from low concentration to high concentration region
BSolvent is from high concentration to low concentration region
CSolute takes place
DNone of these
355
Cp is expressed in S.I. unit as_______________?
AJ/kg.°K
B0°K
CW/m2.°C
DW/m.°K
356
Increasing the temperature of an aqueous solution will cause decrease in its________________?
AMolality
BMole fraction
CWeight percent
DMolarity
357
A rigid vessel containing three moles of nitrogen gas at 30°C is heated to 250°C. Assume the average capacities of nitrogen to be Cp = 29.1 J/mole.°C and, Cv = 20.8 J/mole.°C. The heat required, neglecting the heat capacity of the vessel, is__________________?
A13728 J
B19206 J
C4576 J
D12712 J
358
Enthalpy of formation of NH3 is – 46 kJ/kg mole. The enthalpy change for the gaseous reaction, 2NH3 → N2 + 3H2, is equal to _____________ kJ/kg. mole?
A46
B92
C-23
D-92
359
Gases diffuse faster compared to liquids because of the reason that the liquid molecules_________________?
AAre held together by stronger inter-molecular forces
BMove faster
CHave no definite shape
DAre heavier
360
The temperature of a gas in a closed container is 27° C. If the temperature of the gas is increased to 300° C, then the pressure exerted is___________________?
ADoubled
BHalved
CTrebled
DUnpredictable