🏭Chemical Engineering MCQs
Chemical Engineering MCQs
496 MCQs131
The partial pressure of each constituent present in an alloy is _____________ the total vapor pressure exerted by the alloy?
ALess than
Bor C; depends on the type of alloy
CMore than
DEither
132
In any spontaneous process, ?
AOnly F decreases
BOnly A decreases
CBoth F and A decreases
DBoth F and A increase
133
The change in Gibbs free energy for vaporisation of a pure substance is___________________?
APositive
BNegative
CZero
DMay be positive or negative
134
Answer: Option B 392. Keeping the pressure constant, to double the volume of a given mass of an ideal gas at 27°C, the temperature should be raised to _____________ °C?
A270
B327
C300
D540
135
Free energy___________________?
ADecreases in all spontaneous (or irreversible) processes
Band C
CRemains unchanged in reversible processes carried at constant temperature and pressure
DAll A,
136
Degrees of freedom at triple point will be______________?
A0
B1
C2
D3
137
For an irreversible process involving only pressure-volume work____________________?
A(dF)T, p
B(dF)T, p = 0
C(dF)T, p > 0
D(dA)T, v >0
138
Out of the following refrigeration cycles, which one has the minimum COP (Co-efficient of performance) ?
AAir cycle
BCarnot cycle
COrdinary vapour compression cycle
DVapour compression with a reversible expansion engine
139
If the vapour pressure at two temperatures of a solid phase in equilibrium with its liquid phase are known, then the latent heat of fusion can be calculated by the _________________?
AMaxwell’s equation
BClausius-Clapeyron Equation
CVan Laar equation
DNernst Heat Theorem
140
Pick out the undesirable property for a good refrigerant ?
AHigh thermal conductivity
BLow freezing point
CLarge latent heat of vaporisation
DHigh viscosity