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 9 of 50

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Q81.
Pick out the wrong statement.

a.

In a batch reactor, which is exclusively used for liquid phase reactions; temperature pressure and composition may vary with time.

b.

In a semi-batch reactor, one reactant is charged batchwise, while the other reactant is fed continuously.

c.

In a continuous flow reactor, uniform concentration can not be maintained throughout the vessel even in a well agitated system.

d.

In a continuous flow reactor, both the reactants and the products flow out continuously.

Discuss
Answer: (c).In a continuous flow reactor, uniform concentration can not be maintained throughout the vessel even in a well agitated system.
Q82.
The effectiveness factor for large value of Thiele modulus (L√(K/D₁)) of a solid catalysed first order reaction is equal to (where, L = length of the reactor, cm, D₁ = diffusion co-efficient, cm²/second)

a.

A

b.

B

c.

C

d.

D

Discuss
Answer: (b).B
Q83.
Following isothermal kinetic data are obtained in a basket type of mixed flow reactor for a porous catalyst. Determine the role of pore diffusion and external mass transfer processes.

a.

Strong pore diffusion control and mass transfer not controlling.

b.

Both pore diffusion and mass transfer not controlling.

c.

Both pore diffusion and mass transfer controlling.

d.

Mass transfer controlling.

Discuss
Answer: (a).Strong pore diffusion control and mass transfer not controlling.
Q84.
For a solid catalysed chemical reaction, the effectiveness of solid catalyst depends upon the __________ adsorption.

a.

physical

b.

chemical

c.

both (a) and (b)

d.

neither (a) nor (b)

Discuss
Answer: (b).chemical
Q85.
Pick out the correct statement.

a.

In catalytic reactions, the catalyst reacts with the reactants.

b.

A catalyst initiates a chemical reaction.

c.

A catalyst lowers the activation energy of the reacting molecules.

d.

A catalyst can not be recovered chemi cally unchanged at the end of the chemical reaction.

Discuss
Answer: (c).A catalyst lowers the activation energy of the reacting molecules.
Q86.
In a/an __________ reactor, there is exchange of heat with the surroundings with sizeable temperature variation.

a.

adiabatic

b.

isothermal

c.

non-adiabatic

d.

none of these.

Discuss
Answer: (c).non-adiabatic
Q87.
'Unreacted core model' represents the reaction involving

a.

combustion of coal particles.

b.

roasting of sulphide ores.

c.

manufacture of carbon disulphide from elements.

d.

none of these.

Discuss
Answer: (b).roasting of sulphide ores.
Q88.
The effect of increasing pressure on the gaseous equilibrium of the reaction 2X+3Y ↔ 3X+2Y indicates that

a.

pressure has no effect.

b.

backward reaction is favoured.

c.

forward reaction is favoured.

d.

none of these.

Discuss
Answer: (a).pressure has no effect.
Q89.
If in the gaseous phase reaction, N₂O₄ ↔ 2NO₂, x is the part of N₂O₄ which dissociates, then the number of molecules at equilibrium will be

a.

(1 + x)

b.

(1 - x)

c.

(1 + x)²

d.

(1 - x)²

Discuss
Answer: (a).(1 + x)
Q90.
A batch reactor is characterised by

a.

constant residence time.

b.

variation in extent of reaction and properties of the reaction mixture with time.

c.

variation in reactor volume.

d.

very low conversion.

Discuss
Answer: (b).variation in extent of reaction and properties of the reaction mixture with time.
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