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 Power Plant 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 Power Plant 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 Power Plant 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 50 of 50

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Q491.
Main component of sewage gas produced during aneorobic decomposition of organic waste (by suitable bacteria) during sewage disposal is

a.

H₂

b.

CH₄

c.

CO₂

d.

N₂

Discuss
Answer: (b).CH₄
Q492.
Atomising steam to fuel oil ratio in a burner should be around

a.

0.5

b.

1.5

c.

2.5

d.

3.5

Discuss
Answer: (a).0.5
Q493.
Pure carbon is completely burnt in oxygen. The flue gas analysis is 70% CO₂, 20% CO and 10% O₂. The percent excess oxygen used is

a.

20

b.

12.5

c.

0

d.

10

Discuss
Answer: (c).0
Q494.
Oxygen percentage (by weight) in atmospheric air is

a.

19

b.

21

c.

23

d.

29

Discuss
Answer: (c).23
Q495.
__________ of the coal is the basis for Seylor's coal classification.

a.

Proximate analysis

b.

Ultimate analysis

c.

Caking index

d.

Calorific value

Discuss
Answer: (b).Ultimate analysis
Q496.
Main constituents of benzol are

a.

benzene, toluene & xylene.

b.

tar & creosote.

c.

ammonia & phenol.

d.

anthracene & phenol.

Discuss
Answer: (a).benzene, toluene & xylene.
Q497.
Which of the following would require maximum amount of % excess air for complete combustion ?

a.

Coke oven gas

b.

Furnace oil

c.

Pulverised coal

d.

Lump coal (fixed on chain grate).

Discuss
Answer: (d).Lump coal (fixed on chain grate).
Q498.
During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the

a.

incomplete combustion.

b.

complete combustion.

c.

high oxygen in flue gas.

d.

none of these.

Discuss
Answer: (b).complete combustion.
Q499.
Flue gas obtained on complete combustion of pure acetylene (a hydrocarbon fuel) will contain

a.

CO

b.

CO₂

c.

H₂O

d.

both (b) & (c)

Discuss
Answer: (d).both (b) & (c)
Q500.
Low temperature oxidation of coal is accelerated by the

a.

storage in large heaps.

b.

storage in compressed piles.

c.

absence of porous or friable particles.

d.

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

Discuss
Answer: (a).storage in large heaps.
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