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 17 of 50

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Q161.
A first order reaction requires two unequal sized CSTR. Which of the following gives higher yield ?

a.

Large reactor followed by smaller one.

b.

Smaller reactor followed by larger one.

c.

Either of the arrangement (a) or (b) will give the same yield.

d.

Data insufficient, can't be predicted.

Discuss
Answer: (c).Either of the arrangement (a) or (b) will give the same yield.
Q162.
Pick out the correct statement.

a.

A lower temperature favours the reaction of lower activation energy.

b.

The dispersion number for a reactor/vessel is uL/D.

c.

The rate controlling step in a reaction involving many steps is the fastetst step.

d.

Pore volume and porosity of a catalyst is measured by Brunaver-Emmet-Teller (BET) technique.

Discuss
Answer: (a).A lower temperature favours the reaction of lower activation energy.
Q163.
If a solid-gas non-catalytic reaction occurs at very high temperature, the rate controlling step is the __________ diffusion.

a.

film

b.

ash layer

c.

pore

d.

none of these

Discuss
Answer: (a).film
Q164.
The units of frequency factor in Arhenious equation

a.

are the same as those of the rate constant.

b.

depend on the order of the reaction.

c.

depend on temperature, pressure etc. of the reaction.

d.

are cycles per unit time.

Discuss
Answer: (a).are the same as those of the rate constant.
Q165.
Which of the following is not a chemical step in a fluid solid catalytic reaction ?

a.

Surface chemical reaction

b.

Adsorption

c.

Desorption

d.

None of these

Discuss
Answer: (d).None of these
Q166.
Pick out the wrong statement.

a.

Visible radiation provides the necessary activation energy in photochemical reactions.

b.

The order and molecularity of a complex reaction may not be the same.

c.

For a second order reaction, the slope of the graph/plot between rate and (concentration) is equal to the rate constant (k).

d.

Molecularity of the reaction is always a whole number greater than zero.

Discuss
Answer: (b).The order and molecularity of a complex reaction may not be the same.
Q167.
Arrhenious equation represents graphically the variation between the __________ and temperature.

a.

rate of reaction

b.

frequency factor

c.

rate constant

d.

activation energy

Discuss
Answer: (c).rate constant
Q168.
__________ catalytic reaction is involved in the thermal cracking of gas oil.

a.

Homogeneous

b.

Homogeneous non

c.

Heterogeneous

d.

Heterogeneous non

Discuss
Answer: (a).Homogeneous
Q169.
Variables affecting the rate of homogeneous reactions are

a.

pressure and temperature only.

b.

temperature and composition only.

c.

pressure and composition only.

d.

pressure, temperature and composition.

Discuss
Answer: (d).pressure, temperature and composition.
Q170.
A chemical reaction occurs when the energy of the reacting molecules is __________ the activation energy of the reaction.

a.

less than

b.

equal to

c.

more than

d.

equal to or more than

Discuss
Answer: (d).equal to or more than
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