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 33 of 50

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Q321.
The performance equations for constant density systems are identical for

a.

P.F.R. and backmix reactor.

b.

P.F.R. and batch reactor.

c.

P.F.R, batch reactor and backmix reactor.

d.

batch reactor and backmix reactor.

Discuss
Answer: (b).P.F.R. and batch reactor.
Q322.
Reaction rate of a first order reaction, which is half completed in 23 minutes will be

a.

0.03 sec⁻¹

b.

0.03 min⁻¹

c.

0.03 hr⁻¹

d.

0.05 min⁻¹

Discuss
Answer: (b).0.03 min⁻¹
Q323.
Which of the following is the optimum operating condition for an exothermic reversible reaction taking place in a plug-flow reactor ?

a.

Temperature should be high in the beginning and decreased towards the end of the reaction.

b.

Very low temperature should be used throughout the reaction.

c.

Very high temperature should be used throughout the reaction.

d.

none of these.

Discuss
Answer: (a).Temperature should be high in the beginning and decreased towards the end of the reaction.
Q324.
The reactions with low activation energy are

a.

always spantaneous

b.

slow

c.

fast

d.

non-spontaneous

Discuss
Answer: (c).fast
Q325.
Molecularity of an elementary reaction, P + Q → R + S is

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (d).4
Q326.
Which of the following is not endothermic in nature ?

a.

Combustion of sulphur.

b.

Gasification of carbon.

c.

Thermal cracking of fuel oil.

d.

Steam reforming of naphtha.

Discuss
Answer: (a).Combustion of sulphur.
Q327.
The space time is equivalent to the holding time in a steady state mixed reactor for

a.

non-isothermal gas reaction.

b.

variable fluid density systems.

c.

constant fluid density systems.

d.

gas reactions with changing no. of moles.

Discuss
Answer: (c).constant fluid density systems.
Q328.
A trickle bed reactor is the one, which

a.

has altogether three streams either entering or leaving.

b.

processes three reactants at different flow rates.

c.

processes three reactants with same flow rate.

d.

employs all the three phases (i.e.. .solid, liquid and gas).

Discuss
Answer: (d).employs all the three phases (i.e.. .solid, liquid and gas).
Q329.
What is the order of a chemical reaction in which doubling the initial concentration of the reactants doubles the half life time of the reaction ?

a.

0

b.

1

c.

2

d.

3

Discuss
Answer: (a).0
Q330.
The excess energy of the reactants required to dissociate into products is known as the __________ energy.

a.

thermal

b.

activation

c.

threshold

d.

binding

Discuss
Answer: (b).activation
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