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 29 of 50

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Q281.
Consider the 'n'th order irreversible liquid phase reaction A β†’ B. Which one of the following plots involving half life of the reaction (t₁/β‚‚) and the initial reactant concentration (Cα΄€β‚€) gives a straight line plot ?

a.

Cα΄€β‚€ Vs t₁/β‚‚

b.

ln Cα΄€β‚€ Vs t₁/β‚‚

c.

Cα΄€β‚€ Vs ln t₁/β‚‚

d.

ln Cα΄€β‚€ Vs ln t₁/β‚‚

Discuss
Answer: (c).Cα΄€β‚€ Vs ln t₁/β‚‚
Q282.
The rate of forward reaction, at chemical equilibrium is____the rate of backward reaction.

a.

more than

b.

less than

c.

equal to

d.

either (b) or (c)

Discuss
Answer: (c).equal to
Q283.
Kinetics of a solid catalysed reaction can best be studied in a __________ reactor.

a.

batch

b.

plug-flow

c.

mixed

d.

none of these

Discuss
Answer: (c).mixed
Q284.
The reactions of high molecularity are rare, because

a.

of very large activation energy of many bodies.

b.

of low probability of many body collisions.

c.

many body collisions are not favoured energetically.

d.

of requirement of very large concentration for such reactions.

Discuss
Answer: (b).of low probability of many body collisions.
Q285.
Which of the following is the most suitable for isothermal operation ?

a.

Batch reactor

b.

Back-mix reactor

c.

Plug-flow reactor

d.

Fixed bed reactor

Discuss
Answer: (b).Back-mix reactor
Q286.
For a first order chemical reaction, the rate constant

a.

changes on changing the concentration units.

b.

is not a function of the unit of time.

c.

has unit of time⁻¹.

d.

none ofthese.

Discuss
Answer: (c).has unit of time⁻¹.
Q287.
A catalyst promoter

a.

improves the activity of a catalyst.

b.

acts as a catalyst support.

c.

itself has very high activity.

d.

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

Discuss
Answer: (a).improves the activity of a catalyst.
Q288.
In case of a P.F.R., there

a.

may be lateral mixing of fluid.

b.

should not be any mixing along the flow path.

c.

both (a) and (b).

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) and (b).
Q289.
For the non-catalytic reaction of particles with surrounding fluid, the time needed to achieve the same fractional conversion for particles of different but unchanging sizes is proportional to the square of particle diameter, when the __________ is the controlling resistance.

a.

film diffusion

b.

diffusion through ash layer

c.

chemical reaction

d.

either (a), (b) or (c)

Discuss
Answer: (b).diffusion through ash layer
Q290.
If Ξ”G (free energy change) for a chemical reaction is very large and negative, then the reaction is

a.

not feasible.

b.

just feasible.

c.

very much feasible.

d.

unpredictable as Ξ”G is no measure of feasibility of a reaction.

Discuss
Answer: (c).very much feasible.
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