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Chemical Engineering Mcqs 9594 MCQs [All-Courses]

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Chemical Engineering MCQs designed for job test and interview preparation, particularly for fresh graduates, students, and candidates appearing in competitive exams. These multiple-choice questions cover important topics such as the fundamentals of chemical engineering, chemical processes, chemical reactions, process control, and instrumentation, along with other key concepts in the field.

All Topics  9594

If ‘n’ is the order of reaction, then unit of rate constant is _________________?
A 1/(time)(concentration)n – 1
B (Time)-1 (concentration)n – 1
C (Time)n – 1 (concentration)
D None of these
Correct Answer: 1/(time)(concentration)n – 1
A rise in temperature ______________________?
A Normally tends to increase the reaction rate
B Does not affect a catalysed reaction
C Does not affect photo-chemical reaction rates
D All A., B. and C.
Correct Answer: All A., B. and C.
BET apparatus is used to determine the ___________________?
A Specific surface of a porous catalyst
B Pore size distribution
C Pore diameter
D Porosity of the catalyst bed
Correct Answer: Specific surface of a porous catalyst
Effectiveness factor of a catalyst pellet is a measure of the _________________ resistance?
A Pore diffusion
B Gas film
C Chemical reaction
D None of these
Correct Answer: Pore diffusion
In the fluid catalytic cracker (FCC), the cracking reaction is _____________ (i) and the regeneration is _______________ (ii) _______________?
A (i) exothermic (ii) endothermic
B (i) exothermic (ii) exothermic
C (i) endothermic (ii) endothermic
D (i) endothermic (ii) exothermic
Correct Answer: (i) endothermic (ii) exothermic
A chemical reaction, A → 3B, is conducted in a constant pressure vessel. Starting with pure A, the volume of the reaction mixture increases 3 times in 6 minutes. The fractional conversion is ___________________?
A 0.33
B 0.5
C 1
D Data insufficient, can’t be predicted
Correct Answer: 1
In which of the following reactions, the equilibrium will shift to the right, if the total pressure is increased ?
A H2 + Cl2 ⇌ 2HCl
B N2 + O2 ⇌ 2NO
C N2O4 ⇌ 2 NO2
D H2 + I2 ⇌ 2HI
Correct Answer: N2 + O2 ⇌ 2NO
A plug-flow reactor is characterized by _____________________?
A High capacity
B Presence of axial mixing
C Presence of lateral mixing
D Constant composition and temperature of reaction mixture
Correct Answer: Presence of lateral mixing
The rate of a gas phase reaction is given by K . CA . CB. If the volume of the reaction vessel is reduced to l/4th of its initial volume, then the reaction rate compared to the original rate will be _______________ times?
A 4
B 16
C 8
D 2
Correct Answer: 16
In a CSTR _______________ varies with time ?
A Reaction rate
B Concentration
C Both A. & B.
D Neither A. nor B.
Correct Answer: Neither A. nor B.
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