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 42 of 50

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Q411.
'n' number of plug flow reactors (P.F.R) in series with a total volume 'V' gives the same conversion as one P.F.R. of volume

a.

V/n

b.

V

c.

V.n

d.

1/V

Discuss
Answer: (b).V
Q412.
Knudsen diffusion is directly proportional to

a.

T

b.

√T

c.

1/√T

d.

T²

Discuss
Answer: (b).√T
Q413.
Fractional conversion __________ for an exothermic reversible chemical reaction, when the temperature is maximum.

a.

increases

b.

remains unchanged

c.

decreases

d.

unpredictable from the data

Discuss
Answer: (c).decreases
Q414.
The rate constant of a reaction is a function of the

a.

time of reaction.

b.

temperature of the system.

c.

extent of reaction.

d.

initial concentration of the reactants.

Discuss
Answer: (b).temperature of the system.
Q415.
Mean residence time is equal to the space time, when

a.

the feed rate is measured at temperature and pressure in the reactor.

b.

the temperature, pressure and the density of reaction mixture remains constant throughout the reactor.

c.

there is no change in number of moles in gaseous reaction.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q416.
If 'n' is the order of reaction, then unit of rate constant is

a.

1/(time)(concentration)ⁿ⁻¹

b.

(time)⁻¹ (concentration)ⁿ⁻¹

c.

(time)ⁿ⁻¹ (concentration)

d.

none of these

Discuss
Answer: (a).1/(time)(concentration)ⁿ⁻¹
Q417.
The value of 'n' for a chemical reaction A → B, whose reaction rate is Cᴀⁿ, will be __________ if the rate of the reaction increases by a factor of 8, when the concentration of is doubled.

a.

0

b.

1

c.

2

d.

3

Discuss
Answer: (d).3
Q418.
Reactions with high activation energy are

a.

very temperature sensitive

b.

temperature insensitive

c.

always irreversible

d.

always reversible

Discuss
Answer: (a).very temperature sensitive
Q419.
In case of a/an __________ chemical reaction, conversion increases with the rise in temperature.

a.

reversible exothermic

b.

irreversible exothermic

c.

irreversible endothermic

d.

reversible endothermic

Discuss
Answer: (d).reversible endothermic
Q420.
A space velocity of 5 hr⁻¹ means that

a.

five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour.

b.

after every 5 hours, reactor is being filled with the feed.

c.

cent per cent conversion can be achieved in at least 5 hours.

d.

a fixed conversion of a given batch of feed takes 5 hours.

Discuss
Answer: (a).five reactor volumes of feed (at specified conditions) are being fed into the reactor per hour.
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