Chemical Engineering MCQs
Chemical Engineering MCQs cover process calculations, heat/mass transfer, reaction engineering, plant design, safety, and environment, helping FPSC, PPSC, NTS candidates and graduates strengthen concepts, match exam trends, and prepare for competitive tests and chemical industry careers.
Q: Le Chatelier’s principle relates to
A) Kinetics
B) Thermodynamics
C) Chemical equilibrium
D) Fluid flow
✅ Correct Answer: C
Explanation: Describes response to system changes.
Q: Fouling in heat exchangers leads to
A) Reduced corrosion
B) Better heat transfer
C) Increased pressure
D) Lower efficiency
✅ Correct Answer: D
Explanation: Fouling decreases thermal efficiency.
Q: Material commonly used in reactor linings
A) PVC
B) Graphite
C) Stainless steel
D) Copper
✅ Correct Answer: B
Explanation: Graphite resists high temperatures and corrosion.
Q: In a batch reactor, conversion depends on
A) Reactor size
B) Time
C) Flow rate
D) Heat exchanger
✅ Correct Answer: B
Explanation: No inflow/outflow; time governs conversion.
Q: Packing in distillation columns increases
A) Pressure drop
B) Flow resistance
C) Viscosity
D) Surface area
✅ Correct Answer: D
Explanation: Enhances contact between vapor and liquid.