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: Pressure drop in packed bed increases with
A) Channeling
B) Low viscosity
C) Less flow
D) High particle size
✅ Correct Answer: A
Explanation: Maldistribution raises pressure drop.
Q: Common drying mechanism
A) Radiation
B) Diffusion
C) Convection
D) All of these
✅ Correct Answer: D
Explanation: All may be involved depending on setup.
Q: Bubble point occurs when
A) Saturated liquid
B) Liquid is fully vaporized
C) Liquid starts boiling
D) Vapor condenses
✅ Correct Answer: C
Explanation: First vapor appears at bubble point.
Q: Activated sludge process is for
A) Sterilization
B) Water softening
C) Wastewater treatment
D) Oil recovery
✅ Correct Answer: C
Explanation: Biological method for treating sewage.
Q: Main use of venturi meter
A) Absorb shocks
B) Control temperature
C) Compress gases
D) Measure flow rate
✅ Correct Answer: D
Explanation: Uses pressure change to measure flow.