🏭Chemical Engineering MCQs
Chemical Engineering MCQs
496 MCQs221
For a constant volume process _____________ by the system is used only to increase the internal energy?
Anor B
BWork done
CBoth
DNeither
222
Internal energy of an element at 1 atm and 25° C is ____________ kcal/kg.mole?
A0
B273
C25
DNone of these
223
“Law of corresponding states” says that___________________?
ATwo different gases behave similarly, if their reduced properties (i.e. P, V and T) are same
BThe surface of separation (i. e. the meniscus) between liquid and vapour phase disappears at the critical temperature
CNo gas can be liquefied above the critical temperature, howsoever high the pressure may be.
DThe molar heat of energy of gas at constant volume should be nearly constant (about 3 calories)
224
Which of the following processes cannot be made reversible even under ideal condition of operation ?
A,
B& (
CExpansion of steam in a turbine
DAll (
225
The four properties of a system viz. P, V, T, S are related by ______________ equation?
AGibbs-Duhem
BGibbs-Helmholtz
CMaxwell’s
DNone of these
226
In any spontaneous process, the ______________ free energy decreases ?
Anor
BD. Neither
CBoth
227
Molar heat capacity of water in equilibrium with ice at constant pressure is __________ Kcal/kg mole. °K___________________?
A0
B∞
C50
D100
228
The compressibility factor of a gas is given by (where, V1 = actual volume of the gas V2 = gas volume predicted by ideal gas law)____________________?
AV1/V2
BV2/V1
CV1 – V2
DV1.V2
229
The freezing point of a liquid decreases when the pressure is increased, if the liquid ____________ while freezing?
A,
Bor (
CDoes not change in volume
DEither (
230
The number of degrees of freedom for an azeotropic mixture in a two component vapourliquid equilibria is/are__________________?
AZero
BOne
CTwo
DThree