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

Discover more Topics under Basic Chemical Engineering

Q431.
A second order reaction of the form A + B โ†’ C is called a pseudo-first order reaction, when

a.

Cแด€โ‚€ = Cส™โ‚€

b.

Cแด€โ‚€ > Cส™โ‚€

c.

Cส™โ‚€ > Cแด€โ‚€

d.

Cส™โ‚€ โ‰ฅ Cแด€โ‚€

Discuss
Answer: (d).Cส™โ‚€ โ‰ฅ Cแด€โ‚€
Q432.
Pick out the wrong statement.

a.

In a first order reaction, A โ†’ 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 โ†’ 2C is k.Cแด€.Cส™, 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.
Q433.
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.
Q434.
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.
Q435.
In which of the following gaseous phase reactions, the equilibrium of the reaction remains unaffacted by pressure changes ?

a.

2Oโ‚ƒ โ†” 3Oโ‚‚

b.

Nโ‚‚ + Oโ‚‚ โ†” 2NO

c.

2NOโ‚‚ โ†” Nโ‚‚Oโ‚„

d.

2SOโ‚‚ + Oโ‚‚ โ†” 2SOโ‚ƒ

Discuss
Answer: (b).Nโ‚‚ + Oโ‚‚ โ†” 2NO
Q436.
Integral method for analysing the kinetic data is used

a.

when the data are scattered.

b.

for testing specific mechanisms with simple rate expressions.

c.

both (a) and (b).

d.

none of these.

Discuss
Answer: (c).both (a) and (b).
Q437.
A first order reaction A โ†’ B occurs in an isothermal porous catalyst pellet of spherical shape. If the concentration of A at the centre of the pellet is much less than at the external surface, the process is limited by

a.

diffusion within the pellet.

b.

reaction.

c.

external mass transfer.

d.

none of the above.

Discuss
Answer: (a).diffusion within the pellet.
Q438.
'N' plug flow reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for __________ order reactions.

a.

first

b.

second

c.

third

d.

any

Discuss
Answer: (d).any
Q439.
Specific rate constant for a second order reaction

a.

is independent of temperature.

b.

varies with temperature.

c.

depends on the nature of the reactants.

d.

both (b) and (c).

Discuss
Answer: (d).both (b) and (c).
Q440.
A reversible liquid phase endothermic reaction is to be carried out in a plug flow reactor. For minimum reactor volume, it should be operated such that the temperature along the length

a.

decreases.

b.

increases.

c.

is at the highest allowable temperature throughout.

d.

first increases and then decreases.

Discuss
Answer: (c).is at the highest allowable temperature throughout.
Page 44 of 50