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Fuels MCQ Questions & Answers

Fuels MCQs : This section focuses on the "Fuels". These Multiple Choice Questions (MCQs) should be practiced to improve the Fuels skills required for various interviews (campus interview, walk-in interview, company interview), placement, entrance exam and other competitive examinations.




Question 1

What is Cetane?

A. It has zero cetane number
B. It has 100 cetane number
C. It helps detonation
D. It is a straight chain paraffin

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Question 2

Which of the following is the lightest and most volatile liquid fuel?

A. diesel
B. petrol
C. gasoline
D. fuel oil

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Question 3

Octane number is determined by comparing the performance of petrol with the following hydro-carbons?

A. iso-octane
B. mixture of normal heptane and iso octane
C. alpha methyl napthalene
D. none of the mentioned

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Question 4

Normal heptane ___________

A. accelerates auto-ignition
B. helps to resist auto-ignition
C. does not affect auto-ignition
D. none of the mentioned

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Question 5

Which of the following coal has highest enthalpy of combustion?

A. Peat coal
B. Sami-bituminous coal
C. Semi-anthracite coal
D. Lignite coal

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Question 6

When crude oil is heated, then which of the following hydrocarbon is given off first?

A. kerosene
B. gasoline
C. paraffin
D. natural gas

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Question 7

Petrol is distilled at a temperature in range of ______________

A. 30-65ºC
B. 65-220ºC
C. 220-350ºC
D. 350-450ºC

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Question 8

Ethyl fluid is used ___________

A. to increase the octane rating of the fuel
B. to increase the cetane rating of the fuel
C. as a defrosting agent
D. none of the mentioned

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Question 9

What is the main drawback of liquid fuel in thermal power plant?

A. High handling cost
B. Hard and Adhesive oil slag
C. Difficult to store
D. High cost of liquid fuel

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Question 10

In a diesel engine the diesel fuel injected into cylinder would burn instantly at about compressed air temperature of ___________

A. 250ºC
B. 500ºC
C. 1000ºC
D. 1500ºC

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Question 11

Polymerization is a chemical process in which molecules of a compound become ___________

A. larger
B. smaller
C. liquid
D. gaseous

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Question 12

Self-ignition temperature of petrol is of the order of ____________

A. 150ºC
B. 240ºC
C. 370ºC
D. more than 500ºC

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Question 13

Grindability of coal should be low.

A. TRUE
B. FALSE

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Question 14

Gaseous fuel guarantees are based on ___________

A. calorific value of oil
B. low heat value of oil
C. mean heat value of oil
D. none of the mentioned

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Question 15

Diesel fuel, compared to petrol is ___________

A. less difficult to ignite
B. just about the same difficult to ignite
C. more difficult to ignite
D. none of the mentioned

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Question 16

Which of the following is most suitable fuel for thermal power plant?

A. Peat coal
B. Lignite coal
C. Bituminous coal
D. Anthracite coal

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Question 17

Kerosene is distilled at ____________

A. 30-65ºC
B. 65-220ºC
C. 220-350ºC
D. 350-450ºC

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Question 18

Which of the following coal has highest moisture content?

A. Sub-bituminous coal
B. Bituminous coal
C. Anthracite coal
D. Peat coal

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Question 19

What is Iso-octane?

A. It has an octane number of 0
B. It has an octane number of 50
C. It has an octane number of 100
D. none of the mentioned

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Question 20

Which of the following is correct arrangement of different types of coals according to their increasing carbon content?

A. Peat, bituminous, lignite, anthracite
B. Peat, lignite, bituminous, anthracite
C. Bituminous, peat, lignite, anthracite
D. Peat, anthracite, bituminous, lignite

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Question 21

Ignition quality of petrol is expressed by?

A. octane number
B. calorific value
C. self ignition temperature
D. cetane number

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Question 22

A minimum of 4 to 6 percent of ash is required in coal.

A. TRUE
B. FALSE

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Question 23

The selection of coal for power plant does not depends on _________

A. Calorific value
B. Nitrogen content
C. Sulphur content
D. Grindability index

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