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 49 of 50

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Q481.
An example of autothermal reactor operation is

a.

sulphur dioxide oxidation

b.

ethylene oxidation

c.

benzene oxidation

d.

ammonia synthesis

Discuss
Answer: (b).ethylene oxidation
Q482.
For a packed bed reactor; the presence of a long tail in the residence time distribution curve is an indication of

a.

ideal plug flow

b.

bypass

c.

dead zone

d.

chanelling

Discuss
Answer: (c).dead zone
Q483.
For reaction, P + 2 → 3R, molar rate of consumption of P is

a.

double of that of Q.

b.

same as that of Q.

c.

half of that of Q.

d.

2/3rd of that of Q.

Discuss
Answer: (c).half of that of Q.
Q484.
If pore diffusion is the controlling step in a solid catalysed reaction, the catalyst

a.

porosity is very important.

b.

porosity is of less importance.

c.

internal surface area is utilised efficiently.

d.

none of these.

Discuss
Answer: (b).porosity is of less importance.
Q485.
The conversion of a reactant, undergoing a first order reaction, at a time equal to three times the half life of the reaction is

a.

0.875

b.

0.5

c.

0.425

d.

data insufficient to calculate

Discuss
Answer: (a).0.875
Q486.
What is the value of 'n' if the reaction rate of the chemical reaction A → B, is proportional to Cᴀⁿ and it is found that the reaction rate triples, when the concentration of 'A' is increased 9 times ?

a.

1/2

b.

1/3

c.

1/9

d.

3

Discuss
Answer: (a).1/2
Q487.
A second order reaction of the form A + B → C is called a pseudo-first order reaction, when

a.

Cᴀ₀ = Cʙ₀

b.

Cᴀ₀ > Cʙ₀

c.

Cʙ₀ > Cᴀ₀

d.

Cʙ₀ ≥ Cᴀ₀

Discuss
Answer: (d).Cʙ₀ ≥ Cᴀ₀
Q488.
Pick out the wrong statement.

a.

In a first order reaction, A → products; the reaction becomes slower as it proceeds, because the concentration of A decreases and the rate is proportional to the concentration of A.

b.

Transition state theory approaches the problem of calculating reaction rates by concentrating on the idea of activated complexes.

c.

According to the penetration theory, the mass transfer co-efficient decreases, if the exposure time of an eddy to the solute decreases.

d.

If the rate of an irreversible reaction, A + B → 2C is k.Cᴀ.Cʙ, then the reaction is always elementary.

Discuss
Answer: (c).According to the penetration theory, the mass transfer co-efficient decreases, if the exposure time of an eddy to the solute decreases.
Q489.
Inversion of cane sugar is an example of

a.

unimolecular reaction with first order.

b.

bimolecular reaction with second order.

c.

bimolecular reaction with first order.

d.

unimolecular reaction with second order.

Discuss
Answer: (c).bimolecular reaction with first order.
Q490.
Pick out the correct statement.

a.

A catalyst speeds up the forward reaction but slows shown the reverse reaction.

b.

Addition of catalyst changes the equilibrium constant.

c.

Pressure changes do not change the equilibrium concentrations.

d.

The composition of equilibrium is changed by catalyst.

Discuss
Answer: (c).Pressure changes do not change the equilibrium concentrations.
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