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.

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Fuels and Combustion MCQs | Page 19 of 50

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Q181.
Anthracite coal

a.

contains more volatile matter than bituminous coal.

b.

ignites more easily than bituminous coal.

c.

is essentially a coking coal.

d.

burns with short, bluish, yellow-tipped flame producing very little smoke.

Discuss
Answer: (d).burns with short, bluish, yellow-tipped flame producing very little smoke.
Q182.
Number of macrocomponents present in coal according to Stopes are

a.

four

b.

five

c.

six

d.

two

Discuss
Answer: (a).four
Q183.
The maximum adiabatic flame temperature in air as compared to that in pure oxygen is

a.

much lower.

b.

much higher.

c.

same.

d.

either lower or higher, depends on the type of fuel.

Discuss
Answer: (a).much lower.
Q184.
Yield of charcoal in high temperature carbonisation of wood is about __________ percent.

a.

10

b.

25

c.

50

d.

75

Discuss
Answer: (b).25
Q185.
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.
Q186.
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.
Q187.
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).
Q188.
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%)
Q189.
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).
Q190.
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
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