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 44 of 50

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Q431.
With increase in the order of reaction (for all positive reaction orders), the ratio of the volume of mixed reactor to the volume of plug flow reactor (for identical feed composition, flow rate and conversion)

a.

increases

b.

decreases

c.

remains same

d.

increases linearly

Discuss
Answer: (a).increases
Q432.
Reaction of benzene with chlorine gas to produce tri-chlorobenzene exemplifies a/an __________ reaction.

a.

elementary

b.

parallel

c.

consecutive

d.

none of these

Discuss
Answer: (c).consecutive
Q433.
For the gaseous reaction 2A โ†’ B, where the feed consists of 50 mole % A and 50 mole % inerts, the expansion factor is

a.

1

b.

-0.5

c.

-0.25

d.

0

Discuss
Answer: (c).-0.25
Q434.
The molecularity and the order of reaction respectively, for the hydrolysis of methyl acetate in presence of acids are

a.

2 & 1

b.

11 & 2

c.

2 & 2

d.

1 & 1

Discuss
Answer: (a).2 & 1
Q435.
The irreversible reaction is a special case of reversible reaction, if the

a.

equilibrium constant is 1.

b.

conversion of the reactant at equilibrium condition is zero.

c.

reactant concentration at equilibrium condition is zero.

d.

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

Discuss
Answer: (c).reactant concentration at equilibrium condition is zero.
Q436.
A pollutant P degrades according to first order kinetics. An aqueous stream containing P at 2 kmole/m³ and volumetric flow rate 1 m³/h requires a mixed flow reactor of volume V to bring down the pollutant level to 0.5 kmole/m³ . The inlet concentration of the pollutant is now doubled and the volumetric flow rate is tripled. If the pollutant level is to be brought down to the same level of 0.5 kmole/m³ , the volume of the mixed flow reactor should be increased by a factor of

a.

7

b.

6

c.

3

d.

7/3

Discuss
Answer: (a).7
Q437.
For the liquid phase parallel reactions:

R, rR = Kโ‚.Cแด€โ‚‚; Eโ‚ = 80 KJ/mole
S, rs = Kโ‚.Cแด€ ; Eโ‚‚ = 120 KJ/mole

The desired product is R. A higher selectivity of R will be achieved, if the reaction is conducted at

a.

low temperature in a CSTR.

b.

high temperature in a CSTR.

c.

low temperature in a PFR.

d.

high temperature in a PFR.

Discuss
Answer: (d).high temperature in a PFR.
Q438.
With increase in initial concentration, the fractional conversion of a first order reaction in a given time

a.

increases

b.

decreases

c.

remains constant

d.

unpredictable

Discuss
Answer: (c).remains constant
Q439.
The rate of reaction of a/an __________ reaction is not affected by temperature rise.

a.

autocatalytic

b.

photochemical

c.

consecutive

d.

zero order.

Discuss
Answer: (b).photochemical
Q440.
With an increase in pressure in gaseous phase chemical reactions, the fractional conversion __________ when the number of moles decreases.

a.

increases

b.

decreases

c.

remains unaffected

d.

unpredictable from the data

Discuss
Answer: (a).increases
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