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 22 of 50

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Q211.
Combustion of pulverised fuel

a.

requires larger combustion chamber than rich gaseous fuel.

b.

in a metallurgical furnace does not contaminate the product in the furnace by ash from fuel.

c.

suppresses the discharge of fine dust and grit into atmosphere

d.

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

Discuss
Answer: (a).requires larger combustion chamber than rich gaseous fuel.
Q212.
Gasification of the solid fuel converts its organic part into combustible by interaction with air/oxygen and steam so as to obtain a secondary gaseous fuel of high calorific value having no ash. Gasification reactions are normally carried out at about __________ °C.

a.

400-500

b.

900-1000

c.

1400-1500

d.

1700-1800

Discuss
Answer: (b).900-1000
Q213.
Low temperature oxidation of coal during storage does not decrease its

a.

oxygen content

b.

caking power

c.

calorific value

d.

none of these

Discuss
Answer: (d).none of these
Q214.
With increase in the oxygen content of the coal, its __________ decreases.

a.

calorific value

b.

caking power

c.

both (a) & (b)

d.

neither (a) nor (b)

Discuss
Answer: (c).both (a) & (b)
Q215.
Which of the following is not increased by using preheated combustion air in place of ordinary air at room temperature ?

a.

Calorific value of the fuel.

b.

Flame temperature achieved.

c.

Speed of combustion of fuel.

d.

Heat transfer rate to the stock in the furnace.

Discuss
Answer: (a).Calorific value of the fuel.
Q216.
Wood charcoal is obtained by the destructive distillation of wood. It is used in the production of activated carbon, which is not used for the

a.

decolourisation of sugar.

b.

solvent recovery from air and gases

c.

absorption of gases and vapor.

d.

electrode manufacture.

Discuss
Answer: (d).electrode manufacture.
Q217.
Washing of coal is done to reduce the

a.

inherent impurities

b.

adhering impurities

c.

mineral matter

d.

both (b) and (c)

Discuss
Answer: (d).both (b) and (c)
Q218.
Volumetric ratio of N₂ to O₂ in dry atmospheric air is

a.

0.21

b.

3.76

c.

4.76

d.

0.79

Discuss
Answer: (b).3.76
Q219.
Coke oven gas burns with an yellowish flame, because of the presence of

a.

CO₂

b.

CH₄

c.

H₂

d.

NH₃

Discuss
Answer: (b).CH₄
Q220.
Main constituent of the gas produced from a gobar gas plant is

a.

CO₂

b.

CH₄

c.

H₂

d.

CO

Discuss
Answer: (b).CH₄
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