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 38 of 50

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Q371.
Furnace oil consumption in a furnace for a given duty employing preheated combination air (at 300° ) may be reduced by about __________ percent as compared to the use of atmospheric combustion air.

a.

5

b.

10

c.

20

d.

35

Discuss
Answer: (c).20
Q372.
The main reason for making the copper calorimeter (used in bomb calorimeter) silvery white and shining/polished is to

a.

minimise its corrosion.

b.

avoid radiation heat loss.

c.

make it look attractive.

d.

none of these.

Discuss
Answer: (b).avoid radiation heat loss.
Q373.
The weathering index of a coal

a.

gives an idea of the fusion temperature of ash.

b.

is related to its calorific value.

c.

is a measure of its size stability, when stored & exposed to weather.

d.

is a measure of its caking tendency.

Discuss
Answer: (c).is a measure of its size stability, when stored & exposed to weather.
Q374.
Bright coal

a.

contains more than 90% durain.

b.

contains more than 90% fussain.

c.

contains mainly vitrain & clarain and is generally coking.

d.

is non-coking.

Discuss
Answer: (c).contains mainly vitrain & clarain and is generally coking.
Q375.
Most of the coking coals are

a.

anthracite

b.

bituminous

c.

lignite

d.

none of these

Discuss
Answer: (b).bituminous
Q376.
Gobar gas constitutes mainly of

a.

CH₄ & CO₂

b.

CO & CO₂

c.

CH₄ & N₂

d.

CO & N₂

Discuss
Answer: (a).CH₄ & CO₂
Q377.
High ash containing coke

a.

produces more slag when used in the blast furnace.

b.

has poor strength and abrasion resistance.

c.

is desirable in producer gas manufacture.

d.

none of these.

Discuss
Answer: (a).produces more slag when used in the blast furnace.
Q378.
Stoichiometric combustion of 12 kg of carbon requires __________ of oxygen.

a.

1kg mole

b.

22.4 Nm³

c.

32 kg

d.

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

Discuss
Answer: (d).all (a), (b) and (c)
Q379.
Coal is pulverised before burning in large capacity boiler furnaces mainly to

a.

ensure its complete combustion.

b.

facilitate easy ash removal.

c.

enhance its calorific value.

d.

provide trouble free operation.

Discuss
Answer: (a).ensure its complete combustion.
Q380.
Which of the following is a primary fuel ?

a.

Blast furnace coke

b.

Gasoline

c.

Natural gas

d.

Wood charcoal

Discuss
Answer: (c).Natural gas
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