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 25 of 50

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Q241.
Photochemical reaction rate does not depend significantly on temperature, because

a.

it is a reversible reaction.

b.

it is an exothermic reaction.

c.

the energy of reacting molecules exceeds the activation energy by absorption of light.

d.

none of these.

Discuss
Answer: (c).the energy of reacting molecules exceeds the activation energy by absorption of light.
Q242.
A CSTR is to be designed in which an exothermic liquid phase first order reaction of the type, A β†’ R, is taking place. The reactor is to be provided with a jacket in which coolant is flowing. Following data is given:

Cα΄€β‚€ = 5 kmole/m³ ; Xα΄€ = 0.5; Feed temperature = reactor temperature = 40°C. Rate constant at 40°C = 1 min⁻¹ ; (Ξ”H) = - 40kJ/mole; ρ = 1000kg/m³ ,CP = 4 J/gm.°C ; q = 10⁻³ m³/min (ρ and CP are same for the reactant and product streams).

The amount of heat to be removed is

a.

2/3 kW

b.

1kW

c.

5/3 kW

d.

4kW

Discuss
Answer: (c).5/3 kW
Q243.
According to the 'law of mass action', the rate of reaction is directly proportional to the

a.

equilibrium constant.

b.

volume of the reaction vessel.

c.

nature of the reactants.

d.

molar concentration of the reactants.

Discuss
Answer: (d).molar concentration of the reactants.
Q244.
In a chemical reaction, __________ are conserved.

a.

ions

b.

masses

c.

atoms

d.

both (b) & (c)

Discuss
Answer: (d).both (b) & (c)
Q245.
For an ideal gas mixture undergoing a reversible gaseous phase chemical reaction, the equilibrium constant

a.

is independent of pressure.

b.

increases with pressure.

c.

decreases with pressure.

d.

increases /decreases with pressure depending on the stoichiometric co-efficients of the reaction.

Discuss
Answer: (b).increases with pressure.
Q246.
With increase in temperature, the equilibrium __________ rises in case of endothermic reaction.

a.

constant

b.

conversion

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (b).conversion
Q247.
Enzymes (a protein) are catalysts found in organisms. Its efficiency of catalysing a reaction is due to its capacity to lower the activation energy of the reaction. The enzyme ptyalin used for food digestion is present in

a.

blood

b.

saliva

c.

intestine

d.

gland

Discuss
Answer: (b).saliva
Q248.
Considering the endotheomic dissociation of CaCO₃ in a closed vessel (CaCO₃ ↔ CaO + COβ‚‚), the pressure of COβ‚‚ increases, if

a.

a catalyst is added.

b.

the temperature is increased.

c.

an inert gas is pumped keeping the temperature constant.

d.

none of these.

Discuss
Answer: (b).the temperature is increased.
Q249.
During manufacture of Hβ‚‚SOβ‚„, the oxidation of SOβ‚‚ to SO₃ by oxygen is an en-dothermic reaction. The yield of SO₃ will be maximised, if the

a.

temperature is increased.

b.

pressure is reduced.

c.

temperature is increased and pressure is reduced.

d.

temperature is reduced and pressure is increased.

Discuss
Answer: (d).temperature is reduced and pressure is increased.
Q250.
The role of a catalyst in a chemical reaction is to change the

a.

equilibrium constant

b.

activation energy

c.

final products

d.

heat of reaction

Discuss
Answer: (b).activation energy
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