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 10 of 50

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Q91.
Temperature of coke oven gas just before entering into saturator (for recovery of NH₃) is about __________ °C.

a.

30

b.

65

c.

120

d.

180

Discuss
Answer: (b).65
Q92.
With increase in calorific value of fuels, their adiabatic flame temperatures

a.

increase

b.

decrease

c.

remain unchanged

d.

may increase or decrease ; depends on the quantity of products of combustion

Discuss
Answer: (d).may increase or decrease ; depends on the quantity of products of combustion
Q93.
Coal tar fuel - 200 (CTF 200) is a mixture of

a.

pitch and creosote oil.

b.

light oil and pitch.

c.

anthracene and crecosote oil.

d.

solar oil and pitch.

Discuss
Answer: (a).pitch and creosote oil.
Q94.
Calorific value of coke even gas produced by low temperature carbonisation of coal is about __________ Kcal/Nm³.

a.

4000

b.

2500

c.

6500

d.

10000

Discuss
Answer: (c).6500
Q95.
High pressure coal gasification is employed in __________ process.

a.

Lurgi

b.

Kopper-Totzek

c.

Winkler

d.

none of these

Discuss
Answer: (a).Lurgi
Q96.
Flue gas from the heating chamber of byproduct coke ovens is removed by

a.

forced draft fan

b.

induced draft fan

c.

steam ejector

d.

natural draft

Discuss
Answer: (d).natural draft
Q97.
A carbonaceous fuel (containing no H₂ or hydrocarbons) is burnt and the resulting flue gas contains 21% CO₂. It means that

a.

21% excess air has been used for combustion.

b.

21% excess oxygen has been used for combustion.

c.

complete combustion of fuel has taken place.

d.

no excess air has been used for combustion.

Discuss
Answer: (c).complete combustion of fuel has taken place.
Q98.
Fusion point of coal ash generally varies from 1000 to 1700° C. Ash having fusion point less than __________ °C is liable to form clinker.

a.

1100

b.

1250

c.

1350

d.

1400

Discuss
Answer: (a).1100
Q99.
Light oil whose major component is benzol, is obtained by the distillation of crude tar in the temperature range of __________ °C.

a.

80-170

b.

200-300

c.

250-270

d.

280-300

Discuss
Answer: (a).80-170
Q100.
Pick out the wrong statement.

a.

Main constituents of LPG are propane and butane.

b.

C.V. of natural gas is about 10000 KCal/Nm³.

c.

C.V. of LPG is about 26000 kcal/Nm³(11500 kcal/kg).

d.

L.P.G. is lighter than air.

Discuss
Answer: (d).L.P.G. is lighter than air.
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