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 18 of 50

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Q171.
A sooty flame can be made non-luminous by

a.

admitting more gas.

b.

shutting gas supply.

c.

admitting more air.

d.

shutting air supply.

Discuss
Answer: (c).admitting more air.
Q172.
A coal that softens and fuses on heating is

a.

classified

b.

carbonised

c.

caking

d.

non-caking

Discuss
Answer: (c).caking
Q173.
Which of the following reactions occuring during coal gasification is called the Neumann reversal reaction ?

a.

2CO ↔ C + CO₂

b.

CO + H₂O ↔ CO₂ + H₂

c.

C + H₂O ↔ CO + H₂

d.

C + 2H₂O ↔ CO₂ + 2H₂

Discuss
Answer: (a).2CO ↔ C + CO₂
Q174.
'Mixed gas' used in steel plants is a mixture of

a.

B.F. gas and coke oven gas.

b.

coke oven gas and converter gas.

c.

coke oven gas and L.P.G.

d.

blast furnace gas and naphtha vapor.

Discuss
Answer: (a).B.F. gas and coke oven gas.
Q175.
__________ process is meant for direct hydrogenation of coal to produce liquid fuel.

a.

Fischer-Tropsch

b.

Bergius

c.

Lurgi

d.

None of these

Discuss
Answer: (b).Bergius
Q176.
Producer gas containing least amount of tar is produced by the

a.

partial combustion of coal.

b.

partial combustion of large size (< 50 mm) coke.

c.

high pressure gasification of coal (e.g. in Lurgi gasifier).

d.

atmospheric pressure gasification of coal (e.g., in Kopper-Totzek gasifier).

Discuss
Answer: (b).partial combustion of large size (< 50 mm) coke.
Q177.
Air/gas ratio for complete combustion will be the highest for

a.

LPG

b.

gobar gas

c.

coke oven gas

d.

carburetted water gas

Discuss
Answer: (a).LPG
Q178.
Beehive coke oven

a.

facilitates by-products recovery.

b.

takes 2-3 days for coking of coal but requires no external fuel for heating.

c.

gives larger yield of coke (around 85%) as compared to by-product ovens.

d.

produces coke with very poor strength.

Discuss
Answer: (b).takes 2-3 days for coking of coal but requires no external fuel for heating.
Q179.
Turndown ratio of a gas burner is equal to the

a.

maximum to minimum heat input ratio.

b.

maximum to minimum permissible gas flow rate.

c.

both (a) & (b).

d.

minimum to maximum heat input ratio.

Discuss
Answer: (c).both (a) & (b).
Q180.
In high temperature carbonisation (as compared to low temperature carbonisation) of coal

a.

coke oven gas yield is more.

b.

tar yield is less but free carbon in tar is more.

c.

calorific value of coke oven gas is less.

d.

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

Discuss
Answer: (d).all (a), (b), and (c).
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