17
20
25
34
✅ The correct answer is option A.
Chemical Engineering MCQs
The heat of vaporisation __________ with increase in pressure.
Increases
Decreases
Becomes zero at critical pressure
Both B and C
✅ The correct answer is option D.
In case of an unsaturated vapor-gas mixture, the humid volume increases with increase in the
Total pressure
Absolute humidity at a given temperature
Both A & B
Neither A nor B
✅ The correct answer is option C.
Viscosity of atmospheric air may be about __________ centipoise.
0.015
1.5
15
150
✅ The correct answer is option A.
Osmotic pressure of a dilute solution of a non volatile solute in a solvent obeying Raoult’s law is proportional to the
Temperature
Volume of solution
Moles of non-volatile solute
None of these
✅ The correct answer is option A.
Which of the following is an exothermic reaction?
Conversion of graphite to diamond
Decomposition of water
Dehydrogenation of ethane to ethylene
None of these
✅ The correct answer is option D.
At room temperature, the product [H⁺] [OH⁻] in a solution is 10⁻¹⁴ moles/litre. If, [OH⁻] = 10⁻⁶ moles/litre, then the pH of the solution will be
6
8
10
12
✅ The correct answer is option B.
On mixing 56 gm of CaO with 63 gm of HNO₃, the amount of Ca(NO₃)₂ formed is __________ gm.
82
164
41
8.2
✅ The correct answer is option A.
In osmosis through a semi-permeable membrane, diffusion of the
Solvent is from low concentration to high concentration region
Solvent is from high concentration to low concentration region
Solute takes place
None of these
✅ The correct answer is option A.
Pure oxygen is mixed with air to produce an enriched air containing 50 volume % of oxygen. The ratio of moles of air to oxygen used is
1.72
0.58
0.5
0.2
✅ The correct answer is option B.