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 43 of 50

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Q421.
Incomplete combustion of a fuel is characterised by the high __________ in the flue gas.

a.

smoke

b.

temperature

c.

oxygen

d.

carbon monoxide

Discuss
Answer: (d).carbon monoxide
Q422.
Low temperature oxidation of stored coal results in the

a.

decrease in its caking power & calorific value.

b.

decrease in its carbon & hydrogen content.

c.

increase in its oxygen content.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q423.
Gross calorific value will be equal to the net calorific value for

a.

H₂

b.

C₂H₂

c.

CO

d.

C₂H₆

Discuss
Answer: (c).CO
Q424.
Bulk density of pulverised coal may be about __________ kg/m³.

a.

100

b.

500

c.

1000

d.

1500

Discuss
Answer: (b).500
Q425.
The maximum adiabatic flame temperature is attained, when the fuel is burnt with

a.

theoretically required amount of air.

b.

more than theoretically required amount of air.

c.

less than theoretically required amount of air.

d.

theoretically required amount of oxygen.

Discuss
Answer: (d).theoretically required amount of oxygen.
Q426.
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.
Q427.
The cooling medium used in dry quenching of coke is

a.

nitrogen

b.

air

c.

phenolic water

d.

carbon dioxide

Discuss
Answer: (a).nitrogen
Q428.
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.
Q429.
Gobar gas is produced by the __________ of 'gobar' (cow dung).

a.

hydrolysis

b.

fermentation

c.

oxidation

d.

dehydration

Discuss
Answer: (b).fermentation
Q430.
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
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