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 5 of 50

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Q41.
A liquid phase reaction is to be carried out under isothermal conditions. The reaction rate as a function of conversion has been determined experimentally and is shown in the figure given below. What choice of reactor or combination of reactors will require the minimum overall reactor volume, if a conversion of 0.9 is desired ?

a.

CSTR followed by a PFR

b.

PFR followed by a CSTR

c.

CSTR followed by a PFR followed by a CSTR.

d.

PFR followed by a CSTR followed by a PFR.

Discuss
Answer: (d).PFR followed by a CSTR followed by a PFR.
Q42.
The rate equation for the reaction represented by below equation, is given by - rₓ = K₁ . Cₓ/(1 + K₂ Cₓ). At high value of Cₓ (i.e.., K₂Cₓ > > 1), the order of the reaction and the rate constant are respectively

a.

zero order & K₁/K₂

b.

zero order & K₁

c.

first order & K₁

d.

first order & K₁/K₂

Discuss
Answer: (a).zero order & K₁/K₂
Q43.
For a __________ order chemical reaction given below, the half life period is independent of the initial concentration of the reactant A.

a.

zero

b.

first

c.

second

d.

third

Discuss
Answer: (b).first
Q44.
The rate expression for the gaseous phase reaction, CO + 2H₂ ↔ CH₃OH, is given below. Which of the following is not possible ?

a.

α = 1, β = 1, γ =1

b.

α = 1, β = 2, γ = 1

c.

α = 1/3, β = 2/3, γ = 1/3

d.

α = 1/2, β = 1, γ = 1/2

Discuss
Answer: (a).α = 1, β = 1, γ =1
Q45.
The exit age distribution curve E(t) for an ideal CSTR with the average residence time, τ, is given by

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q46.
A second order liquid phase reaction, A → B, is carried out in a mixed flow reactor operated in semi batch mode (no exit stream). The reactant A at concentration CAF is fed to the reactor at a volumetric flow rate of F. The volume of the reacting mixture is V and the density of the liquid mixture is constant. The mass balance for A is

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (d).D
Q47.
The following half life data are available for the irreversible liquid phase reaction A → products. The overall order of reaction is

a.

0.5

b.

1

c.

1.5

d.

2

Discuss
Answer: (c).1.5
Q48.
A non-catalytic chemical reaction of the following type is called a __________ reaction.

a.

parallel

b.

series

c.

series-parallel

d.

none of these

Discuss
Answer: (c).series-parallel
Q49.
The reaction rate constants at two different temperature T₁ and T₂ are related by

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q50.
What is the order of chemical reaction given below , if it is found that the reaction rate doubles on doubling the concentration of B and also the reaction rate doubles when the concentrations of both A & B were doubled and quandrupled when the concentrations of both B & C were doubled ?

a.

1

b.

2

c.

3

d.

4

Discuss
Answer: (b).2
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