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: Purpose of a cyclone separator
A) Heat transfer
B) Gas compression
C) Fluid mixing
D) Particle separation
✅ Correct Answer: D
Explanation: Removes particulates using centrifugal force.
Q: Residence time in CSTR is defined as
A) Volume/Flow rate
B) Volume/Area
C) Area/Velocity
D) Flow rate/Volume
✅ Correct Answer: A
Explanation: Important for reaction performance.
Q: Prandtl number represents ratio of
A) Thermal to molecular diffusivity
B) Heat to mass transfer
C) Viscosity to density
D) Pressure to velocity
✅ Correct Answer: A
Explanation: Key in heat transfer calculations.
Q: Operation involving simultaneous heat and mass transfer
A) Evaporation
B) All of these
C) Distillation
D) Absorption
✅ Correct Answer: B
Explanation: All involve both heat and mass movement.
Q: Material balancing requires knowledge of
A) Process flow diagrams
B) Reaction kinetics
C) Stoichiometry
D) Equipment design
✅ Correct Answer: C
Explanation: Balancing is stoichiometry-based.