A. Rate of change of vapour pressure with temperature
B. Effect of an inert gas on vapour pressure
C. Calculation of ΔF for spontaneous phase change
D. Temperature dependence of heat of phase transition
✅ The correct answer is option A.
Chemical Engineering MCQs
In the reaction; N₂ + O₂ ⇋ 2NO, increasing the pressure will result in
A. Shifting the equilibrium towards right
B. Shifting the equilibrium towards left
C. No change in equilibrium condition
D. None of these
✅ The correct answer is option C.
If atmospheric temperature and dew point are nearly equal, then the relative humidity is
A. Zero
B. 50%
C. Almost 100%
D. Unpredictable
✅ The correct answer is option C.
For an isothermal process, the internal energy of a gas
A. Increases
B. Decreases
C. Remains unchanged
D. Data insufficient, can’t be predicted
✅ The correct answer is option C.
If an ideal solution is formed by mixing two pure liquids in any proportion, then the __________ of mixing is zero.
A. Enthalpy
B. Volume
C. Both A & B
D. Neither A nor B
✅ The correct answer is option C.
The partial molar enthalpy of a component in an ideal binary gas mixture of composition Z, at a temperature T and pressure P, is a function only of
A. T
B. T and P
C. T, P and Z
D. T and Z
✅ The correct answer is option B.
(∂T/∂P)H is the mathematical expression for
A. Specific heat at constant pressure (Cp)
B. Specific heat at constant volume (Cv)
C. Joule-Thompson co-efficient
D. None of these
✅ The correct answer is option C.
When a system is in equilibrium for all possible processes, the differential or finite change of entropy is
A. < 0
B. > 0
C. = 0
D. None of these
✅ The correct answer is option A.
Which of the following equations is obtained on combining 1st and 2nd law of thermodynamics, for a system of constant mass?
A. DE = Tds – PdV
B. DQ = CvdT + PdV
C. DQ = CpdT + Vdp
D. Tds = dE – PdV
✅ The correct answer is option A.
Which of the following is used to set the diameter of the distillation column ?
Number of theorectical plates.
Static submergence.
Allowable vapour velocity.
Length of straight rectangular weir on cross-flow tray.
✅ The correct answer is option C.