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 28 of 50

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Q271.
The extent of a reaction is

a.

different for reactants and products.

b.

dimensionless.

c.

depends on the stoichiometric co-efficient.

d.

all of the above.

Discuss
Answer: (d).all of the above.
Q272.
Higher free energy of activation of a chemical reaction (at a given temperature) implies

a.

slower rate of reaction.

b.

higher rate of reaction.

c.

higher equilibrium conversion.

d.

both (b) and (c).

Discuss
Answer: (a).slower rate of reaction.
Q273.
Calcination reaction of limestone (CaCOโ‚ƒ โ†’ CaO + COโ‚‚) goes to completion in the rotary kiln, because

a.

CaO is not dissociated.

b.

COโ‚‚ escapes continuously.

c.

of high calcination temperature.

d.

CaO is more stable than CaCOโ‚ƒ.

Discuss
Answer: (b).COโ‚‚ escapes continuously.
Q274.
Arhenious equation shows the variation of __________ with temperature.

a.

reaction rate

b.

rate constant

c.

energy of activation

d.

frequency factor

Discuss
Answer: (b).rate constant
Q275.
When a catalyst increases the rate of chemical reaction, the rate constant

a.

decreases

b.

increases

c.

remains constant

d.

becomes infinite

Discuss
Answer: (b).increases
Q276.
In which of the following reactions, the equilibrium will shift to the right, if the total pressure is increased?

a.

Hโ‚‚ + Clโ‚‚ โ†” 2HCl

b.

Nโ‚‚ + Oโ‚‚ โ†” 2NO

c.

Nโ‚‚Oโ‚„ โ†” 2NOโ‚‚

d.

Hโ‚‚ + Iโ‚‚ โ†” 2HI

Discuss
Answer: (b).Nโ‚‚ + Oโ‚‚ โ†” 2NO
Q277.
The catalyst in a first order chemical reaction changes the

a.

equilibrium constant

b.

activation energy

c.

heat of formation of the product

d.

heat of reaction

Discuss
Answer: (b).activation energy
Q278.
The dispersion number of perfect mixed flow is

a.

0

b.

> 150

c.

โˆž

d.

< 2100

Discuss
Answer: (c).โˆž
Q279.
An irreversible aqueous phase reaction, A + B โ†’ P, is carried out in an adiabatic mixed flow reactor. A feed containing 4 kmole/m³ of each A and B enters the reactor at 8 m³ /hr. If the temperature of the exit stream is never to exceed 390 K, what is the maximum inlet feed temperature allowed?

Data:
Heat of reaction = - 50 kJ/mole
Density of the reacting mixture = 1000 kg/m³
Specific heat of reacting mixture = 2 kJ/kg.K

The above data can be assumed to be independent of temperature and composition.

a.

190

b.

290

c.

390

d.

490

Discuss
Answer: (b).290
Q280.
For a heterogenous catalytic reaction, A + B โ†’ C, with equimole feed of A and B, the initial rate - rแด€โ‚€ is invariant with total pressure. The rate controlling step is

a.

surface Kc/(1 + Tโ‚›) reaction between absorbed A and B in the gas phase.

b.

surface reaction between absorbed A and absorbed B.

c.

surface reaction between A in the gas phase and absorbed B.

d.

desorption of C.

Discuss
Answer: (d).desorption of C.
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