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: Role of catalyst in chemical reaction
A) Increases yield
B) Decreases pressure
C) Reduces temperature
D) Increases rate
✅ Correct Answer: D
Explanation: Speeds up reaction without consumption.
Q: Dimensionless number for natural convection
A) Prandtl
B) Reynolds
C) Grashof
D) Nusselt
✅ Correct Answer: C
Explanation: Grashof number governs buoyancy-driven flow.
Q: Main component of natural gas
A) Methane
B) Ethane
C) Butane
D) Propane
✅ Correct Answer: A
Explanation: Methane is the primary constituent.
Q: Ziegler-Natta catalysts are used in
A) Reforming
B) Oil refining
C) Ethylene polymerization
D) Alkylation
✅ Correct Answer: C
Explanation: Used to produce polymers like polyethylene.
Q: Humidification is used to
A) Add moisture
B) Cool gases
C) Remove heat
D) Dry air
✅ Correct Answer: A
Explanation: Increases water content in air/gases.