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: Distillation efficiency is measured by
A) Residence time
B) Plate count
C) Murphree efficiency
D) Reflux ratio
✅ Correct Answer: C
Explanation: Indicates tray performance.
Q: Dehumidification involves
A) Reducing temperature
B) Removing moisture
C) Adding water
D) Adding heat
✅ Correct Answer: B
Explanation: Removes moisture from air.
Q: Sublimation is transition from
A) Solid to gas
B) Gas to solid
C) Liquid to gas
D) Solid to liquid
✅ Correct Answer: A
Explanation: Direct solid-to-gas conversion.
Q: Diffusion coefficient increases with
A) Increased pressure
B) Higher viscosity
C) Smaller molecules
D) Lower temperature
✅ Correct Answer: C
Explanation: Smaller molecules diffuse faster.
Q: Main advantage of fluidized bed reactor
A) Uniform temperature
B) High cost
C) Poor control
D) Catalyst deactivation
✅ Correct Answer: A
Explanation: Fluidization ensures even heat distribution.