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.
In autocatalytic reactions,

a.

one of the reactants acts as a catalyst.

b.

one of the products acts as a catalyst.

c.

catalysts have very high selectivity.

d.

no catalyst is used.

Discuss
Answer: (b).one of the products acts as a catalyst.
Q162.
Semibatch reactor is preferred, when a/an

a.

a highly exothermic reaction is to be controlled.

b.

undersirable side reaction (at high concentration of one of the reactants) is to be avoided.

c.

a gas is to be reacted with liquid (e.g. hydrogenation of fat).

d.

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

Discuss
Answer: (d).all (a), (b), and (c).
Q163.
Exposure of a photographic plate to produce a latent image is an example of __________ reaction.

a.

very slow

b.

very fast

c.

photochemical

d.

both (b) and (c)

Discuss
Answer: (d).both (b) and (c)
Q164.
For identical flow rate, feed composition and for elementary first order reactions, 'N' equal sized mixed reactors in series with a total volume 'V' gives the same conversion as a single plug flow reactor of volume 'V' for constant density systems. This is true, when the value of 'N' is

a.

1

b.

>1

c.

∞

d.

≥1

Discuss
Answer: (c).∞
Q165.
Helium-mercury method is used for the measurement of the __________ of the catalyst.

a.

surface area

b.

porosity

c.

pore volume

d.

both (b) & (c).

Discuss
Answer: (d).both (b) & (c).
Q166.
What is the order of a chemical reaction whose rate is deter-mined by the variation of one concentration term only ?

a.

zero

b.

first

c.

second

d.

third

Discuss
Answer: (b).first
Q167.
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.
Q168.
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
Q169.
__________ 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
Q170.
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.
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