Fuels And Combustion MCQ Questions & Answers | Chemical Engineering

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31.
Rate of low temperature oxidation of coal due to bad storage conditions

A. Decreases with increase in surface area

B. Does not vary with increase in surface area

C. Is more for low volatile coal compared to high volatile coal

D. Is accelerated by storage in large heaps with small surface to volume ratio

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32.
During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the

A. Incomplete combustion

B. Complete combustion

C. High oxygen in flue gas

D. None of these

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33.
Which of the following is a primary fuel?

A. Blast furnace coke

B. Gasoline

C. Natural gas

D. Wood charcoal

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34.
Which of the following is not endothermic?

A. Cracking

B. Reforming

C. Gasification

D. Partial oxidation

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35.
Which of the following fuel gases will require maximum amount of air for combustion of 1 Nm³ gas?

A. Blast furnace gas

B. Natural gas

C. Producer gas

D. Water gas

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36.
During combustion of coal on grate, clinker formation is increased by the

A. Use of thick fire bed

B. Low fusion point of ash (< 1100°C)

C. Use of preheated primary air

D. All of the above

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37.
A good quality coal should have

A. Low fusion point of ash

B. High ash content

C. High sulphur

D. None of these

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38.
Coke oven gas is stripped of its H₂S and mercaptans content by

A. Absorption in wash oil

B. Adsorption on bog iron bed

C. Bubbling it through dilute sulphuric acid

D. Adsorption on silica gel

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39.
Which of the following has the highest flame speed?

A. CO

B. H₂

C. CH₄

D. C₂H₆

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40.
A good coking coal should have high __________ content.

A. Ash

B. Sulphur & phosphorus

C. Moisture

D. None of these

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Fuels And Combustion MCQ Questions & Answers | Chemical Engineering

31. Rate of low temperature oxidation of coal due to bad storage conditions

Answer & Solution

32. During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the

Answer & Solution

33. Which of the following is a primary fuel?

Answer & Solution

34. Which of the following is not endothermic?

Answer & Solution

35. Which of the following fuel gases will require maximum amount of air for combustion of 1 Nm3 gas?

Answer & Solution

36. During combustion of coal on grate, clinker formation is increased by the

Answer & Solution

37. A good quality coal should have

Answer & Solution

38. Coke oven gas is stripped of its H2S and mercaptans content by

Answer & Solution

39. Which of the following has the highest flame speed?

Answer & Solution

40. A good coking coal should have high __________ content.

Answer & Solution

Read More Section(Fuels and Combustion)

31.
Rate of low temperature oxidation of coal due to bad storage conditions

32.
During combustion of a gaseous fuel, the presence of a non-luminous flame is an indication of the

33.
Which of the following is a primary fuel?

34.
Which of the following is not endothermic?

35.
Which of the following fuel gases will require maximum amount of air for combustion of 1 Nm³ gas?

36.
During combustion of coal on grate, clinker formation is increased by the

37.
A good quality coal should have

38.
Coke oven gas is stripped of its H₂S and mercaptans content by

39.
Which of the following has the highest flame speed?

40.
A good coking coal should have high __________ content.