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 separates components based on differences in
A) Viscosity
B) Density
C) Boiling point
D) Molecular weight
✅ Correct Answer: C
Explanation: Key principle of distillation.
Q: Heat transfer primarily occurs through
A) All of the above
B) Radiation
C) Convection
D) Diffusion
✅ Correct Answer: A
Explanation: All modes contribute depending on conditions.
Q: Unit of dynamic viscosity in SI system
A) Poise
B) kg/m²
C) Pascal-second
D) N·m/s
✅ Correct Answer: C
Explanation: Correct SI unit for dynamic viscosity.
Q: Process used to convert hydrocarbons into aromatics
A) Cracking
B) Polymerization
C) Alkylation
D) Reforming
✅ Correct Answer: D
Explanation: Reforming increases aromatic content.
Q: Main purpose of a scrubber in a chemical plant
A) Removing particulates
B) Absorbing gases
C) Cooling gases
D) Neutralizing acids
✅ Correct Answer: B
Explanation: Scrubbers absorb harmful gases.