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 26 of 50

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Q251.
Yield of charcoal in high temperature carbonisation of wood is about __________ percent.

a.

10

b.

25

c.

50

d.

75

Discuss
Answer: (b).25
Q252.
Orsat apparatus is meant for

a.

gravimetric analysis of flue gas.

b.

finding out combustion efficiency.

c.

direct determination of nitrogen in flue gas by absorbing it in ammoniacal cuprous chloride.

d.

none of these.

Discuss
Answer: (d).none of these.
Q253.
Pick out the wrong statement.

a.

High concentration of oxygen in flue gas means high stack loss.

b.

Gaseous fuels require the least % excess air for complete combustion.

c.

The ratio of fixed carbon to volatile matter percentage in coal is called its 'fuel ratio'.

d.

Calorific value of natural gas is more than that of LPG.

Discuss
Answer: (d).Calorific value of natural gas is more than that of LPG.
Q254.
Compound coke ovens are those which can be heated by

a.

both steam and electrical power.

b.

lean gas (e.g., B.F. gas).

c.

rich gas (e.g., coke oven gas).

d.

both (b) and (c).

Discuss
Answer: (d).both (b) and (c).
Q255.
Assam coals suffers mainly from the disadvantage of high __________ content.

a.

ash

b.

volatile matter

c.

sulphur (4-6%)

d.

moisture

Discuss
Answer: (c).sulphur (4-6%)
Q256.
Preheating of coal charge for the coke ovens reduces the

a.

time of carbonisation.

b.

yield of gas and tar.

c.

fuel consumption in coking.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q257.
Which of the following coke has the least percentage of ash ?

a.

Petroleum coke

b.

Beehive coke

c.

Foundary coke

d.

Metallurgical coke

Discuss
Answer: (a).Petroleum coke
Q258.
Soft coke is not

a.

produced by low temperature carbonisation of coal.

b.

a domestic fuel.

c.

used in blast furnaces.

d.

none of these.

Discuss
Answer: (c).used in blast furnaces.
Q259.
Mineral matter, 'M' and ash percentage 'A' in coal are roughly related as

a.

M = 1.8 A

b.

M = 0.5 A

c.

M = 1.1 A

d.

M = A

Discuss
Answer: (c).M = 1.1 A
Q260.
Blast furnace gas constitutes mainly of

a.

N₂ & CH₄

b.

N₂ & H₂

c.

N₂ & CO

d.

CH₄ & CO₂

Discuss
Answer: (c).N₂ & CO
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