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 42 of 50

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Q411.
__________ resistance is not involved in the combustion of a carbon particle.

a.

Gas film

b.

Ash

c.

Chemical reaction

d.

none of these

Discuss
Answer: (b).Ash
Q412.
In an ideal P.F.R. at steady state conditions

a.

the composition of reactants remains constant along a flow path.

b.

the conversion of the reactant varies from point to point along a flow path.

c.

there is no lateral mixing of fluid.

d.

there may be diffusion along the flow path.

Discuss
Answer: (b).the conversion of the reactant varies from point to point along a flow path.
Q413.
Space time in flow reactor is

a.

usually equal to the residence time.

b.

the reciprocal of the space velocity.

c.

a measure of its capacity.

d.

both (a) and (b).

Discuss
Answer: (d).both (a) and (b).
Q414.
For a first order isothermal chemical reaction in a porous catalyst, the effectiveness factor is 0.3. The effectiveness factor will increase if the

a.

catalyst size is reduced or the catalyst diffusivity is reduced.

b.

catalyst size is reduced or the catalyst diffusivity is increased.

c.

catalyst size is increased or the catalyst diffusivity is reduced.

d.

catalyst size is increased or the catalyst diffusivity is increased.

Discuss
Answer: (b).catalyst size is reduced or the catalyst diffusivity is increased.
Q415.
Cold shot cooling is only practical when the feed temperature is __________ than the reaction temperature.

a.

higher

b.

much higher

c.

lower

d.

much lower

Discuss
Answer: (d).much lower
Q416.
The preferred reacting system for oxidation of o-xylene to phthalic anhydride is

a.

jacketted liquid phase CSTR.

b.

jacketted steam heated multitubular reactor.

c.

multitubular reactor with cooling.

d.

multistage multitubular reactor with interstage cooling.

Discuss
Answer: (a).jacketted liquid phase CSTR.
Q417.
In the hydrodealkylation of toluene to benzene, the following reactions occur:

C₇H₈ + H₂ → C₆H₆ + CH₄
2C₆H₆ ↔ C₁₂H₁₀ + H₂

Toluene and hydrogen are fed to a reactor in a molar ratio 1:5. 80% of the toluene gets converted and the selectivity of benzene(defined as moles of benzene formed/moles of toluene converted) is 90%. The fractional conversion of hydrogen is

a.

0.16

b.

0.144

c.

0.152

d.

0.136

Discuss
Answer: (b).0.144
Q418.
Catalyst is a substance, which __________ chemical reaction.

a.

increases the speed of a

b.

decreases the speed of a

c.

can either increase or decrease the speed of a

d.

alters the value of equilibrium constant in a reversible

Discuss
Answer: (c).can either increase or decrease the speed of a
Q419.
A rise in temperature

a.

normally tends to increase the reaction rate.

b.

does not affect a catalysed reaction.

c.

does not affect photo-chemical reaction rates.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q420.
The enzyme which can catalyse the conversion of glucose to ethyl alcohol is

a.

invertase

b.

maltase

c.

diastase

d.

zymase

Discuss
Answer: (d).zymase
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