Chemical Reaction Engineering MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Chemical Reaction Engineering, a fundamental topic in the field of Basic Chemical Engineering. Whether you're preparing for competitive exams, honing your problem-solving skills, or simply looking to enhance your abilities in this field, our Chemical Reaction Engineering MCQs are designed to help you grasp the core concepts and excel in solving problems.

In this section, you'll find a wide range of Chemical Reaction Engineering mcq questions that explore various aspects of Chemical Reaction Engineering problems. Each MCQ is crafted to challenge your understanding of Chemical Reaction Engineering principles, enabling you to refine your problem-solving techniques. Whether you're a student aiming to ace Basic Chemical Engineering tests, a job seeker preparing for interviews, or someone simply interested in sharpening their skills, our Chemical Reaction Engineering MCQs are your pathway to success in mastering this essential Basic Chemical Engineering topic.

Note: Each of the following question comes with multiple answer choices. Select the most appropriate option and test your understanding of Chemical Reaction Engineering. You can click on an option to test your knowledge before viewing the solution for a MCQ. Happy learning!

So, are you ready to put your Chemical Reaction Engineering knowledge to the test? Let's get started with our carefully curated MCQs!

Chemical Reaction Engineering MCQs | Page 34 of 50

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Q331.
In a/an __________ vessel, the fluid enters and leaves following plug flow.

a.

open

b.

closed

c.

open-closed

d.

close-opened

Discuss
Answer: (b).closed
Q332.
Shift conversion reaction

a.

converts Nโ‚‚ and Hโ‚‚ into NHโ‚ƒ.

b.

converts CO to COโ‚‚ with steam.

c.

is non-catalytic.

d.

is highly exothermic.

Discuss
Answer: (b).converts CO to COโ‚‚ with steam.
Q333.
The minimum energy required to allow a chemical reaction to proceed is termed as the 'threshold energy '. Chemical reaction with low activation energy are

a.

always irreversible.

b.

insensitive to temperature changes.

c.

mostly irreversible.

d.

highly temperature sensitive.

Discuss
Answer: (b).insensitive to temperature changes.
Q334.
If Thiele modulus is __________ , then the pore diffusion resistance in a catalyst may be considered as negligible.

a.

0

b.

โˆž

c.

< 0.5

d.

> 0.5

Discuss
Answer: (c).< 0.5
Q335.
Catalytic action in a catalytic chemical reaction follows from the ability of catalyst to change the

a.

activation energy

b.

equilibrium constant

c.

heat of reaction

d.

none of these

Discuss
Answer: (a).activation energy
Q336.
The importance of diffusion in a catalyst are increased by

a.

large catalyst particle size.

b.

an active surface of the catalyst.

c.

small pore diameter.

d.

all (a), (b) and (c).

Discuss
Answer: (d).all (a), (b) and (c).
Q337.
A back mix reactor is

a.

suitable for gas phase reactions.

b.

ideal at very low conversion.

c.

same as plug flow reactor (PFR).

d.

same as ideal stirred tank reactor.

Discuss
Answer: (d).same as ideal stirred tank reactor.
Q338.
Which one is the rate controlling step in a solid-gas non-catalytic reaction occurring at very high temperature?

a.

Pore diffusion

b.

Film diffusion

c.

Ash layer diffusion

d.

Chemical reaction

Discuss
Answer: (b).Film diffusion
Q339.
The rate of the heterogenous catalytic reaction A(g) + B(g) โ†’ C(g) is given by
-rแด€ = k.Kแด€.pแด€.Pส™/(1 + Kแด€.Pแด€ + Kc.pc), where Kแด€ and Kc are the adsorption equilibrium constants.
The rate controlling step for this reaction is

a.

absorption of A.

b.

surface reaction between absorbed A and absorbed B.

c.

surface reaction between absorbed A and B in the gas phase.

d.

surface reaction between A in the gas phase and absorbed B.

Discuss
Answer: (c).surface reaction between absorbed A and B in the gas phase.
Q340.
In Langmuir treatment of adsorption,

a.

whole surface of the catalyst does not have the same activity for adsorption and there is attraction between the adsorbed molecule.

b.

whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect on the rate of adsorption per site.

c.

all the adsorption does not take place by the same mechanism.

d.

extent of adsorption is more than one complete monomolecular layer on the surface.

Discuss
Answer: (b).whole surface of the catalyst is essentially uniform and the adsorbed molecule has no effect on the rate of adsorption per site.
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