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 41 of 50

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Q401.
Grindability index of a coal is 100. It implies that the

a.

coal can be pulverised with great difficulty.

b.

coal can't be pulverised.

c.

coal can be easily pulverised.

d.

power consumption in grinding the coal will be very high.

Discuss
Answer: (c).coal can be easily pulverised.
Q402.
The cooling medium used in dry quenching of coke is

a.

nitrogen

b.

air

c.

phenolic water

d.

carbon dioxide

Discuss
Answer: (a).nitrogen
Q403.
A particular coal is said to be free burning when it

a.

burns completely.

b.

gives smokeless burning.

c.

shows little or no fusing action.

d.

none of these.

Discuss
Answer: (c).shows little or no fusing action.
Q404.
Gobar gas is produced by the __________ of 'gobar' (cow dung).

a.

hydrolysis

b.

fermentation

c.

oxidation

d.

dehydration

Discuss
Answer: (b).fermentation
Q405.
Octane number of 2, 2, 4 - trimethyl pen-tane is

a.

0

b.

100

c.

in between 0 and 100

d.

more than 100

Discuss
Answer: (b).100
Q406.
Which of the following has the highest flame speed ?

a.

CO

b.

H₂

c.

CH₄

d.

C₂H₆

Discuss
Answer: (b).H₂
Q407.
Coke ovens in steel plant are heated by

a.

electricity

b.

coke oven gas

c.

mixed gas

d.

both (b) & (c)

Discuss
Answer: (d).both (b) & (c)
Q408.
Coke oven gas is a better fuel than blast furnace gas, because of its higher

a.

calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity).

b.

adiabatic flame temperature.

c.

heat release rate (thus requiring smaller combustion chamber).

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q409.
Short/intense flame is produced during combustion of gaseous fuel by using

a.

high amount/current of combustion air.

b.

low amount/current of combustion air.

c.

preheated secondary air.

d.

very little excess air.

Discuss
Answer: (a).high amount/current of combustion air.
Q410.
The reaction, C + CO₂ ↔ 2CO, taking place during coal gasification is called the __________ reaction.

a.

Neumann reversal

b.

shift conversion

c.

Boudouard

d.

reduction

Discuss
Answer: (c).Boudouard
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