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: Vapor pressure increases with
A) Decreasing temperature
B) Increasing temperature
C) Increasing altitude
D) Adding solids
Q: Main reason for using baffles in reactors
A) Prevent sedimentation
B) Increase cost
C) Reduce reaction
D) Improve mixing
Q: Residence time distribution is important for
A) Kinetic data
B) All of these
C) Ideal mixing assumption
D) Equipment sizing
Q: BOD removal in aeration tank involves
A) Adsorption
B) Precipitation
C) Sedimentation
D) Microbial degradation
Q: Solubility of gases in liquids decreases with
A) Agitation
B) Temperature
C) Pressure
D) Mixing
Q: Fluidized bed combustion enhances
A) Fuel consumption
B) Thermal insulation
C) Corrosion
D) Heat transfer
Q: Design pressure of a vessel depends on
A) Material
B) Fluid color
C) Max operating pressure
D) Thickness
Q: Plug flow reactors have
A) Ideal mixing
B) Dead zones
C) Uniform output
D) Back mixing
Q: Enthalpy is defined as
A) Internal energy + PV
B) Energy + flow work
C) Internal energy + pressure
D) Heat + temperature
Q: Most corrosion-resistant material below
A) Mild steel
B) Stainless steel
C) Copper
D) Aluminum