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 33 of 50

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Q321.
For a first order chemical reaction in a porous catalyst, the Thiele modulus is 10. The effectiveness factor is approximately equal to

a.

1

b.

0.5

c.

0.1

d.

0

Discuss
Answer: (c).0.1
Q322.
In solid catalysed reactions the diffusional effects are more likely to affect the overall rate of reaction for

a.

fast reactions in catalyst of small pore diameter.

b.

fast reaction in catalyst of large pore diameter.

c.

slow reactions in catalyst of small pore diameter.

d.

slow reactions in catalyst of large pore diameter.

Discuss
Answer: (c).slow reactions in catalyst of small pore diameter.
Q323.
Helium-mercury method can be used to determine the __________ of the catalyst particle.

a.

pore volume

b.

solid density

c.

porosity

d.

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

Discuss
Answer: (d).all (a), (b), & (c).
Q324.
For the chemical reaction X → Y, it is observed that, on doubling the concentration of 'X', the reaction rate quadruples. If the reaction rate is proportional to Cₓⁿ, then what is the value of 'n' ?

a.

4

b.

1/4

c.

16

d.

2

Discuss
Answer: (a).4
Q325.
Chemical reaction rate of a component depends upon the

a.

composition of the component only.

b.

temperature of the system.

c.

pressure of the system.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q326.
In a semi-batch reactor

a.

velocity of reaction can be controlled.

b.

maximum conversion can be controlled.

c.

both the reactants flow counter-currently.

d.

residence time is constant.

Discuss
Answer: (a).velocity of reaction can be controlled.
Q327.
The equilibrium constant K of a chemical reaction depends on

a.

temperature only.

b.

pressure only.

c.

temperature and pressure.

d.

ratio of reactants.

Discuss
Answer: (a).temperature only.
Q328.
The reaction rate almost gets doubled for 10°C rise in temperature. This is due to the fact that the

a.

increased temperature reduces the activation energy.

b.

fraction of molecules having threshold energy increases.

c.

collision frequency increases.

d.

value of threshold energy decreases.

Discuss
Answer: (b).fraction of molecules having threshold energy increases.
Q329.
Which of the following is not a unit of reaction rate ?

a.

Moles for med/(surface of catalyst) (time)

b.

Moles formed/volume of reactor) (time)

c.

Mole formed/volume of catalyst) (time)

d.

None of these

Discuss
Answer: (d).None of these
Q330.
Brunaur, Emmet and Teller (BET) equation is used to determine the specific surface area of a porous particle but not the pore volume & the porosity of the catalyst bed. Which of the following postulates is not used to derive BET equation ?

a.

Langmuir's assumption applies to every adsorbed layer.

b.

There is no dynamic equilibrium between successive layer.

c.

The adsorbed layer may be polymolecular in thickness and the heat of adsorption in each layer (except the first one) is involved in each of the evaporation process.

d.

none of these.

Discuss
Answer: (b).There is no dynamic equilibrium between successive layer.
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