Fuels and Combustion MCQs with answers Page - 12

Here, you will find a collection of MCQ questions on Fuels and Combustion. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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A

Admin • 833K Points
Coach

Q. Octane number of 2, 2, 4 - trimethyl pen-tane is

  • (A) 0
  • (B) 100
  • (C) In between 0 and 100
  • (D) More than 100

A

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Q. During coking of coal, the ash content (percentage)

  • (A) Increases
  • (B) Decreases
  • (C) Remains constant
  • (D) None of these

A

Admin • 833K Points
Coach

Q. Abel apparatus is used for those oils, whose flash points are___°F.

  • (A) <120
  • (B) >120
  • (C) >280
  • (D) 300-600

A

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Coach

Q. Pick out the wrong statement.

  • (A) Adiabatic flame temperatures of actual combustions are always less than the maximum values
  • (B) Burning the fuel with excess pure oxygen results in maximum theoretical flame temperature
  • (C) Burning the fuel with theoretically required amount of pure oxygen results in attainment of maximum adiabatic flame temperature
  • (D) Theoretical flame temperature is the temperature attained by the products of combustion, when the fuel is burned without loss or gain of heat

A

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Q. Ignition temperature of a fuel in air is __________ that in pure oxygen.

  • (A) More than
  • (B) Less than
  • (C) Equal to
  • (D) Either more or less; depends on the type of fuel

A

Admin • 833K Points
Coach

Q. The average molecular weight of a flue gas having the composition by volume as CO2 = 25%, O2 = 25%, N2 = 50% will be

  • (A) 27.6
  • (B) 23
  • (C) 47.3
  • (D) 42.9

A

Admin • 833K Points
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Q. High sulphur (4-6%) coal in India are found in

  • (A) Assam
  • (B) Andhra Pradesh
  • (C) Bengal
  • (D) Madhya Pradesh

A

Admin • 833K Points
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Q. Which of the following is not used as a binder in coal briquetting?

  • (A) Tar
  • (B) Molasses
  • (C) Pitch
  • (D) Line

A

Admin • 833K Points
Coach

Q. A coal with high ash content

  • (A) Has higher calorific value
  • (B) Is harder and stronger
  • (C) Is not subjected to washing
  • (D) Has low quantity of mineral matter

A

Admin • 833K Points
Coach

Q. __________ is used as jet engine fuel.

  • (A) Petrol
  • (B) Diesel
  • (C) Kerosene
  • (D) LPG

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