Chemical Engineering MCQs
Chemical Engineering MCQs provide a strong foundation for those preparing for competitive exams and interviews in the chemical industry. The questions cover core topics including process calculations, heat transfer, mass transfer, chemical reaction engineering, plant design, safety, and environmental concerns. Whether you are a fresh graduate or preparing for job assessments through FPSC, PPSC, or NTS, this section helps reinforce key concepts and identify knowledge gaps. The MCQs reflect actual exam trends and are especially useful for test-based recruitment and academic success in the chemical engineering field.
Q: Minimum boiling azeotropes
A) Separate easily
B) Boil at high temp
C) Boil at constant temp
D) Are unstable
Q: Joule-Thomson effect occurs during
A) Combustion
B) Expansion
C) Cooling
D) Compression
Q: Chemical potential relates to
A) Mass transfer
B) Phase equilibrium
C) Diffusion
D) Kinetics
Q: Mass transfer in gases mainly by
A) Convection
B) Conduction
C) Diffusion
D) Radiation
Q: Reverse osmosis is used for
A) Sterilization
B) Desalination
C) Filtration
D) Absorption
Q: Mean free path is important in
A) Thermodynamics
B) Surface tension
C) Mass transfer
D) Molecular diffusion
Q: Spray dryers convert
A) Gas to solid
B) Vapor to liquid
C) Liquid to powder
D) Powder to liquid
Q: In distillation, higher reflux ratio leads to
A) Less purity
B) Higher separation
C) Shorter column
D) Lower efficiency
Q: Absorption accompanied by chemical reaction is called
A) Reactive absorption
B) Simple absorption
C) Dissolution
D) Chemisorption
Q: Critical point is when
A) Solid = Liquid
B) Vapor = Solid
C) Liquid = Vapor
D) No phase exists