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 11 of 50

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Q101.
The most unsuitable reactor for carrying out reactions in which high reactant concentration favours high yields is

a.

backmix reactor

b.

plug flow reactor

c.

series of CSTR

d.

PFR in series

Discuss
Answer: (a).backmix reactor
Q102.
Pick out the wrong statement pertaining to space velocity of flow reactors.

a.

The unit of space velocity is (time)⁻¹ .

b.

The space velocity of 3 hr⁻¹ means that three reactor volumes of feed at specified conditions are being fed into the reactor every hour.

c.

The space velocity of 3 hr⁻¹ means that one third reactor volume of feed at specified conditions are being fed into the reactor.

d.

none of these.

Discuss
Answer: (c).The space velocity of 3 hr⁻¹ means that one third reactor volume of feed at specified conditions are being fed into the reactor.
Q103.
A reactor is generally termed as an autoclave, when it is a

a.

high pressure batch reactor.

b.

atmospheric pressure tank reactor.

c.

high pressure tubular reactor.

d.

atmospheric pressure CSTR.

Discuss
Answer: (a).high pressure batch reactor.
Q104.
6 gm of carbon is burnt with an amount of air containing 18 gm oxygen. The product contains 16.5 gms CO₂ and 2.8 gms CO besides other constituents. What is the degree of conversion on the basis of disappearance of limiting reactant ?

a.

100%

b.

95%

c.

75%

d.

20%

Discuss
Answer: (b).95%
Q105.
The rate constant of a chemical reaction decreases by decreasing the

a.

pressure

b.

concentration of reactants

c.

temperature

d.

duration of reaction

Discuss
Answer: (c).temperature
Q106.
__________ is the response curve for a step input signal from a reactor.

a.

S-curve

b.

C-curve

c.

I-curve

d.

none of these

Discuss
Answer: (a).S-curve
Q107.
'If the catalyst pore size is small in comparison with the mean free path, collisions with the pore wall controls the process'. The diffusivity under this condition is called 'Knudsen diffusivity', which is affected by the

a.

pressure

b.

temperature

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (b).temperature
Q108.
For high conversion in a highly exothermic solid catalysed reaction, use a __________ bed reactor.

a.

fixed

b.

fluidised bed reactor followed by a fixed

c.

fixed bed reactor followed by a fluidised

d.

fluidised

Discuss
Answer: (b).fluidised bed reactor followed by a fixed
Q109.
For every 10°C rise in temperature, the rate of chemical reaction doubles. When the temperature is increased from 30 to 70°C, the rate of reaction increases __________ times.

a.

8

b.

12

c.

16

d.

32

Discuss
Answer: (c).16
Q110.
The single parameter model proposed for describing non-ideal flow is the __________ model.

a.

tank in series

b.

dispersion

c.

both (a) & (b)

d.

neither (a) nor (b).

Discuss
Answer: (c).both (a) & (b)
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