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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

Reaction of benzene with chlorine gas to produce tri-chlorobenzene exemplifies a/an ______________ reaction?
A Elementary
B Parallel
C Consecutive
D None of these
Correct Answer: Consecutive
The eddy diffusivity for a liquid in plug flow must be_________________?
A 1
B 0
C ∞
D Between 0 and 1
Correct Answer: 0
In which of the following gaseous phase reversible reactions, the product yield cannot be increased by the application of high pressure ?
A N2 + O2 ⇌ 2NO
B PCl3 + Cl2 ⇌ PCl5
C N + 3H2 ⇌ 2NH3
D 2SO2 + O2 ⇌ 2SO3
Correct Answer: N2 + O2 ⇌ 2NO
In a/an _____________ vessel, the fluid enters and leaves following plug flow?
A Open
B Closed
C Open-closed
D Close-opened
Correct Answer: Closed
If the pore diffusion controls in a catalytic reaction, the apparent activation energy Ea is equal to___________________?
A The intrinsic activation energy E
B (E + ED) where ED is activation due to diffusion
C (E + ED)/2
D ED/2
Correct Answer: ED/2
When an exothermic reversible reaction is conducted adiabatically, the rate of reaction____________________?
A Continuously increases
B Continuously decreases
C Passes through a maximum
D Passes through a minimum
Correct Answer: Passes through a maximum
Reactions with high activation energy are_____________________?
A Very temperature sensitive
B Temperature insensitive
C Always irreversible
D Always reversible
Correct Answer: Very temperature sensitive
The conversion in a mixed reactor/accomplishing a reaction A → 3R is 50% when gaseous reactant ‘A’ is introduced at the rate of 1 litre/second and the leaving flow rate is 2 litres/second. The holding time for this operation is _______________ second?
A 0.5
B 1
C 2
D 3
Correct Answer: 0.5
A Catalyst ____________________?
A Increases the equilibrium concentration of the product
B Changes the equilibrium constant of the reaction
C Shortens the time to reach the equilibrium
D None of these
Correct Answer: Shortens the time to reach the equilibrium
For a mixed flow reactor operating at steady state, the rate of reaction is given by______________?
A (FA0/V) – (dCA/dt)
B (FA0/V) + (dCA/dt)
C (FA0/V) XA
D -(dCA/dt)
Correct Answer: (FA0/V) XA
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