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 34 of 50

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Q331.
For maximum discharge through a chimney, its height should be

a.

200 meters.

b.

infinitely long.

c.

more than 105.7 metres.

d.

equal to the height of the hot gas column producing draught.

Discuss
Answer: (d).equal to the height of the hot gas column producing draught.
Q332.
Oxygen required for theoretically complete combustion of 1 Nm³ methane is __________ Nm³.

a.

2

b.

4

c.

6

d.

1

Discuss
Answer: (a).2
Q333.
Bomb calorimeter is used for the determination of calorific value of the __________ fuels.

a.

gaseous

b.

solid

c.

liquid

d.

both (b) and (c)

Discuss
Answer: (d).both (b) and (c)
Q334.
Tolerable concentration of toxic carbon monoxide in atmospheric air is about __________ PPm.

a.

50

b.

1000

c.

5000

d.

10000

Discuss
Answer: (a).50
Q335.
Rate of low temperature oxidation of coal due to bad storage conditions

a.

decreases with increase in surface area.

b.

does not vary with increase in surface area.

c.

is more for low volatile coal compared to high volatile coal.

d.

is accelerated by storage in large heaps with small surface to volume ratio.

Discuss
Answer: (d).is accelerated by storage in large heaps with small surface to volume ratio.
Q336.
Pick the odd man out.

a.

Briquettes

b.

Wood

c.

Oil gas

d.

Pitch creosote mixture

Discuss
Answer: (b).Wood
Q337.
Power alcohol as compared to straight run gasoline has lower

a.

calorific value

b.

octane number

c.

specific gravity

d.

viscosity

Discuss
Answer: (a).calorific value
Q338.
When the coal is heated in absence of air, it is called its

a.

deoxidation

b.

gasification

c.

coalification

d.

carbonisation

Discuss
Answer: (d).carbonisation
Q339.
C.V. (kcal/Nm³) of gaseous fuels __________ with increase in molecular weight.

a.

decreases

b.

increases

c.

remains constant

d.

may increase or decrease, depends on combustibles.

Discuss
Answer: (d).may increase or decrease, depends on combustibles.
Q340.
As the C/H ratio of the fuel increases, the amount of CO₂ formed on combustion __________ for the same percentage of excess air.

a.

decreases

b.

increases

c.

remains same

d.

may increase or decrease depending on the type of fuel

Discuss
Answer: (b).increases
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