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!

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Fuels and Combustion MCQs | Page 6 of 50

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Q51.
The calorific value of producer gas is around __________ kcal/Nm³

a.

1300

b.

500

c.

4500

d.

9000

Discuss
Answer: (a).1300
Q52.
About __________ Nm³ of air will be required for the complete combustion of 2 Nm³ of CO.

a.

2

b.

3

c.

5

d.

1

Discuss
Answer: (c).5
Q53.
Coking time in beehive coke oven is about

a.

12 hours

b.

2-3 days

c.

one week

d.

two weeks

Discuss
Answer: (b).2-3 days
Q54.
"Overfire burning" in a furnace is a phenomenon characterised by the

a.

supply of excess fuel.

b.

supply of excess air.

c.

burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air.

d.

none of these.

Discuss
Answer: (c).burning of carbon monoxide and other incombustibles in upper zone of furnace by supplying more air.
Q55.
Which of the following is not a by-product recovered in a high temperature coal carbonisation plant ?

a.

Benzol

b.

Pitch-cresosote mixture (PCM)

c.

Napthalene

d.

Ethylene

Discuss
Answer: (d).Ethylene
Q56.
Pensky-Marten apparatus is used for those oils, whose flash points are __________ °F.

a.

<120

b.

>120

c.

<90

d.

90-110

Discuss
Answer: (b).>120
Q57.
In high temperature carbonisation of coal compared to low temperature carbonisation

a.

yield of ammonia is less.

b.

aromatic content of tar is low.

c.

H₂ content in the coke oven gas is more.

d.

calorific value of the coke oven gas is lower.

Discuss
Answer: (c).H₂ content in the coke oven gas is more.
Q58.
A coal having high amount of volatile matter

a.

would require smaller combustion chamber.

b.

produces very little of tar and gas on carbonisation.

c.

ignites easily and burns with long smoky flame.

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q59.
Carbon Content by weight in air dried wood may be about __________ percent.

a.

10

b.

25

c.

50

d.

80

Discuss
Answer: (c).50
Q60.
Which of the following accentuates clinker-ing trouble on furnace grate burning coal ?

a.

Low reactivity of carbonised residue containing high proportions of iron & sulphur.

b.

Low forced draught and fuel bed temperature.

c.

Thick fire bed and preheated primary air.

d.

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

Discuss
Answer: (d).All (a), (b) and (c).
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