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 17 of 50

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Q161.
Which of the following is not a manufactured fuel ?

a.

Coke breeze

b.

Soft coke

c.

Colloidal fuels

d.

Charcoal

Discuss
Answer: (a).Coke breeze
Q162.
Pick out the wrong statement.

a.

Theoretical flame temperature is the temperature attained by the products of combustion, when the fuel is burned without loss or gain of heat.

b.

Burning the fuel with theoretically required amount of pure oxygen results in attainment of maximum adiabatic flame temperature.

c.

Burning the fuel with excess pure oxygen results in maximum theoretical flame temperature.

d.

Adiabatic flame temperatures of actual combustions are always less than the maximum values.

Discuss
Answer: (c).Burning the fuel with excess pure oxygen results in maximum theoretical flame temperature.
Q163.
Preheating of a gaseous fuel results in increased

a.

flame length

b.

flame temperature

c.

quantity of flue gas

d.

ignition temperature

Discuss
Answer: (b).flame temperature
Q164.
Eschka mixture, which is used for the determination of sulphur in coal, is a mixture of

a.

MgO & Na₂CO₃

b.

MgSO₄ & BaCl₂

c.

BaSO₄ & NaCl

d.

MgCO₃ & NaCl

Discuss
Answer: (a).MgO & Na₂CO₃
Q165.
Fossil fuels mean

a.

solid fuels

b.

liquid fuels

c.

those fuels which are found in the crust of earth.

d.

premature fuels with low calorific value.

Discuss
Answer: (c).those fuels which are found in the crust of earth.
Q166.
Sometimes water is sprayed during coal charging in the coke oven, which helps in

a.

prevention of clinker formation in the oven.

b.

controlling the dust nuisance while charging the coal.

c.

reducing the cracking of hydrocarbons in the gas and increasing the percentage of CO & H₂ in the gas (due to the endothermic reaction represented by C + H₂O = CO + H₂)

d.

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

Discuss
Answer: (d).all (a), (b) and (c).
Q167.
Calorific value of pitch creosote mixture (PCM) i.e., C.T.F.-200 is about

a.

8800 kcal/m³

b.

8800 kcal/kg

c.

same as that of coal middling

d.

25000 kcal/kg

Discuss
Answer: (b).8800 kcal/kg
Q168.
Bomb calorimeter is used to determine the (where, GCV - Gross Calorific Value. NCV - Net Calorific Value.)

a.

GCV at constant pressure.

b.

GCV at constant volume.

c.

NCV at constant pressure.

d.

NCV at constant volume.

Discuss
Answer: (b).GCV at constant volume.
Q169.
Which of the following oil gasification processes is non-catalytic ?

a.

Semet-Solvay process

b.

Segas process

c.

Onia-Gegi process

d.

Steam reforming of naphtha

Discuss
Answer: (a).Semet-Solvay process
Q170.
Dust content in raw blast furnace gas is about __________ gm/Nm³ , hence it is cleaned to the dust level of about < 10 mg /Nm³ before use.

a.

15-30

b.

1-2

c.

70-100

d.

150-200

Discuss
Answer: (a).15-30
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