Fuels And Combustion MCQ Questions & Answers

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Each section contains 100 MCQs on Fuels and Combustion .

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 & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

Coke oven gas is a better fuel than blast furnace gas, because of its higher

A) Calorific value, cleanliness and relatively low distribution cost (due to its low specific gravity) B) Adiabatic flame temperature C) Heat release rate (thus requiring smaller combustion chamber) D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

The main advantage of forced draft over natural draft is that

A) Combustion of fuel is complete B) Smaller height chimney can be used C) Furnace control is easier D) All of the above

Discuss

Answer & Solution

Answer: Option D

No explanation is given for this question. Let's Discuss on Board

A particular coal is said to be free burning when it

A) Burns completely B) Gives smokeless burning C) Shows little or no fusing action D) None of these

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Main constituents of benzol are

A) Benzene, toluene & xylene B) Tar & creosote C) Ammonia & phenol D) Anthracene & phenol

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

A coal containing very high percentage of durain is called __________ coal.

A) Bright B) Splint C) Non-banded D) Boghead

Discuss

Answer & Solution

Answer: Option B

No explanation is given for this question. Let's Discuss on Board

In case of pulverised coal fired steam boiler, the secondary air serves the main purpose of

A) Transportation of coal B) Drying of coal C) Combustion of coal by supplying it around the burner D) Preheating the primary air

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Grindability index of a coal is 100. It implies that the

A) Coal can be pulverised with great difficulty B) Coal can't be pulverised C) Coal can be easily pulverised D) Power consumption in grinding the coal will be very high

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

Heat penetration rate in narrow coke ovens in high temperature carbonisation of coal is around __________ cm/hr.

A) 2.5 B) 0.5 C) 10 D) 20

Discuss

Answer & Solution

Answer: Option A

No explanation is given for this question. Let's Discuss on Board

The reaction, C + CO₂ ⟷ 2CO, taking place during coal gasification is called the __________ reaction.

A) Neumann reversal B) Shift conversion C) Boudouard D) Reduction

Discuss

Answer & Solution

Answer: Option C

No explanation is given for this question. Let's Discuss on Board

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Fuels And Combustion MCQ Questions & Answers | Chemical Engineering