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 32 of 50

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Q311.
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
Q312.
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.
Q313.
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.
Q314.
Organic catalysts differ from the inorganic catalyst in the sense that the former is

a.

active at cryogenic temperatures only.

b.

prohibitively costly.

c.

proteinous in nature.

d.

active at very high temperature only.

Discuss
Answer: (c).proteinous in nature.
Q315.
An endothermic aqueous phase first order irreversible reaction is carried out in an adiabatic plug flow reactor. The rate of reaction

a.

is maximum at the inlet of the reactor.

b.

goes through a maximum along the length of the reactor.

c.

goes through a minimum along the length of the reactor.

d.

is maximum at the exit of the reactor.

Discuss
Answer: (a).is maximum at the inlet of the reactor.
Q316.
Pick out the wrong statement.

a.

Exit age description function (E) and internal age distribution function (I) are related as, E = - dI/dฮธ.

b.

Chmisorption studies are useful in the determination of catalyst surface area and pore size distribution.

c.

A higher temperature favours the reaction of higher activation energy.

d.

A catalyst increases the potential energy barrier over which the reactants must pass to form products.

Discuss
Answer: (d).A catalyst increases the potential energy barrier over which the reactants must pass to form products.
Q317.
For an ideal plug flow reactor, the value of Peclet number is

a.

0

b.

โˆž

c.

1

d.

10

Discuss
Answer: (a).0
Q318.
If the time required for half change is inversely proportional to the square of initial concentration and the velocity depends on the units in which the concentration term is expressed, then the order of reaction is

a.

1

b.

2

c.

3

d.

0

Discuss
Answer: (c).3
Q319.
The experimentally determined overall order of the reaction, A + B โ†’ C + D, is two. Then the

a.

reaction is elementary with a molecularity of 2.

b.

molecularity of the reaction is 2, but the reaction may not be elementary.

c.

reaction may be elementary with molecularity of 2.

d.

reaction is elementary but the molecularity may not be 2.

Discuss
Answer: (a).reaction is elementary with a molecularity of 2.
Q320.
In a continuous flow stirred tank reactor, the composition of the exit stream

a.

is same as that in the reactor.

b.

is different than that in the reactor.

c.

depends upon the flow rate of inlet stream.

d.

none of these.

Discuss
Answer: (a).is same as that in the reactor.
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