Fuels and Combustion MCQs

Welcome to our comprehensive collection of Multiple Choice Questions (MCQs) on Fuels and Combustion, 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 Fuels and Combustion 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 Fuels and Combustion mcq questions that explore various aspects of Fuels and Combustion problems. Each MCQ is crafted to challenge your understanding of Fuels and Combustion 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 Fuels and Combustion 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 Fuels and Combustion. 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 Fuels and Combustion knowledge to the test? Let's get started with our carefully curated MCQs!

Fuels and Combustion MCQs | Page 31 of 50

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Q301.
As the equilibrium moisture content of the coal increases, its

a.

calorific value increases.

b.

swelling number decreases.

c.

swelling number increases.

d.

bulk density decreases.

Discuss
Answer: (b).swelling number decreases.
Q302.
Which of the following is a measure of the agglutinating (i.e., binding) property of coal?

a.

Thickness of plastic layer

b.

Caking index

c.

Swelling index

d.

Gray-king index

Discuss
Answer: (b).Caking index
Q303.
During coal carbonisation process, the conversion of semi-coke to coke is accompanied by an increase in the __________ of the mass.

a.

density

b.

porosity

c.

electrical resistivity

d.

none of these

Discuss
Answer: (a).density
Q304.
Blast furnace gas burns with a bluish flame, because of the presence of

a.

CO

b.

CH₄

c.

CO₂

d.

S

Discuss
Answer: (a).CO
Q305.
The calorific value of natural gas is about __________ kcal/Nm³.

a.

10, 000

b.

2500

c.

25, 000

d.

35, 000

Discuss
Answer: (a).10, 000
Q306.
Low temperature carbonisation of coal takes place at __________ °C.

a.

300

b.

1100

c.

700

d.

150

Discuss
Answer: (c).700
Q307.
Critical Air Blast (CAB) value of coke is a direct measure of its

a.

reactivity

b.

hardness

c.

strength

d.

none of these

Discuss
Answer: (a).reactivity
Q308.
The function of secondary combustion air is to

a.

pneumatically convey the pulverised coal.

b.

completely burn the volatile matter.

c.

burn the lumpy coal.

d.

none of these.

Discuss
Answer: (b).completely burn the volatile matter.
Q309.
The ratio of maximum adiabatic flame temperature in air to that in pure oxygen is always

a.

1

b.

<1

c.

> 1

d.

unpredicatable

Discuss
Answer: (b).<1
Q310.
Which of the following is called "blue gas" ?

a.

coke oven gas

b.

water gas

c.

natural gas

d.

producer gas

Discuss
Answer: (b).water gas
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