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 43 of 50

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Q421.
Find a mechanism that is consistent with the rate equation and reaction given below:

2A + B → A₂B, ( - rᴀ) = k.Cᴀ.Cʙ

a.

A + B ↔ AB ; AB + A → A₂B

b.

A + B → AB;AB + A → A₂B

c.

A + A → AA;AA + B → A₂B

d.

A + A ↔ AA;AA + B → A₂B

Discuss
Answer: (d).A + A ↔ AA;AA + B → A₂B
Q422.
A gaseous reactant is introduced in a mixed reactor of 3 litres volume at the rate of 1 litre/second. The space time is __________ seconds.

a.

1

b.

3

c.

1/3

d.

32

Discuss
Answer: (b).3
Q423.
Velocity of a chemical reaction

a.

decreases with increase in temperature.

b.

increases with increase of pressure of reactants for all reactions.

c.

decreases with increase of reactant concentration.

d.

none of these.

Discuss
Answer: (d).none of these.
Q424.
Backmixing is most predominant in

a.

a well stirred batch reactor.

b.

a plug-flow reactor.

c.

a single CSTR.

d.

CSTR's connected in series.

Discuss
Answer: (c).a single CSTR.
Q425.
If helium is introduced in a reactor containing O₂, SO₂ and SO₃ at equilibrium, so that total pressure increases while volume and temperature remains constant. In this case the dissociation of SO₃ (as per Le Chatlier principle)

a.

decreases

b.

increases

c.

remains unaltered

d.

changes unpredictably.

Discuss
Answer: (a).decreases
Q426.
In an ideal mixed reactor (at steady state), the

a.

space time is equivalent to holding time for constant density systems.

b.

composition throughout the reactor remains same.

c.

exit stream has the same composition as the fluid within the reactor.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q427.
The knowledge of initial concentration and rate constant is necessary to determine the half life time of a reaction of __________ order.

a.

zero

b.

first

c.

second

d.

none of these

Discuss
Answer: (c).second
Q428.
Which of the following factors control the design of a fluid-solid reactor ?

a.

Reaction kinetics for single particle,

b.

Size distribution of solids beingtreated.

c.

Flow patterns of solids and fluid in the reactor.

d.

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

Discuss
Answer: (d).All (a), (b) and (c).
Q429.
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.

Discuss
Answer: (c).shortens the time to reach the equilibrium.
Q430.
The unit of frequency factor in Arhenious equation is

a.

same as that of rate constant.

b.

same as that of activation energy.

c.

dimensionless.

d.

none of these.

Discuss
Answer: (a).same as that of rate constant.
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