🏭Chemical Engineering MCQs
Chemical Engineering MCQs
496 MCQs241
Equation which relates pressure, volume and temperature of a gas is called the__________________?
AEquation of state
BGibbs Duhem equation
CIdeal gas equation
DNone of these
242
At triple point (for one component system), vapour pressure of solid as compared to that of liquid will be________________?
AMore
BLess
CSame
DMore or less; depending on the system
243
Mollier diagram is a plot of___________________?
ATemperature vs. enthalpy
BTemperature vs. enthalpy
CEntropy vs. enthalpy
DTemperature vs. internal energy
244
At 60° C, vapour pressure of methanol and water are 84.562 kPa and 19.953 kPa respectively. An aqueous solution of methanol at 60° C exerts a pressure of 39.223 kPa; the liquid phase and vapour phase mole fractions of methanol are 0.1686 and 0.5714 respectively. Activity co-efficient of methanol is__________________?
A1.572
B1.9398
C3.389
D4.238
245
_____________ fuels require the maximum percentage of ‘excess air’ for complete combustion ?
ASolid
BLiquid
CGaseous
DNuclear
246
Acidity or alkanity of a solution is expressed by its pH value, which is defined as (where, [H+] = hydrogen ion concentration in the solution) ?
Alog (1/H+)
B– log (1/H+)
C1/log H+
DNone of these
247
Heat of transition is the heat evolved or absorbed, when a substance is converted from_________________?
AVapor to liquid
BVapor to solid
CSolid to liquid
DOne allotropic form to another allotropic form
248
The vapor pressure of water at 100°C is__________________?
A100 N/m2
B76 cms of Hg
C13.6 cms of Hg
D760 mm wc
249
The OH- concentration in a solution having pH value 3 is____________________?
A10-3
B10-10
C10-11
D10-13
250
Kinetic theory of gases stipulates that, the____________________?
AEnergy is lost during molecular collisions
BMolecules possess appreciable volume
CAbsolute temperature is a measure of the kinetic energy of molecules
DNone of these