Q. Aniline point test of an oil qualitatively indicates the __________ content of an oil.

  • (A) Paraffin
  • (B) Olefin
  • (C) Aromatic
  • (D) Naphthene
πŸ’¬ Discuss
βœ… Correct Answer: (C) Aromatic

Q. The characterisation factor of a crude oil is calculated as 12.5. It means that; it is

  • (A) Paraffinic
  • (B) Naphthenic
  • (C) Intermediate
  • (D) None of these
πŸ’¬ Discuss
βœ… Correct Answer: (A) Paraffinic

Q. Which of the following does not require preheating during storage in the storage tank as well as during atomisation through burners?

  • (A) PCM
  • (B) Tar
  • (C) Light diesel oil
  • (D) Low viscosity furnace oil
πŸ’¬ Discuss
βœ… Correct Answer: (C) Light diesel oil

Q. Presence of predominantly large quantity of aromatics (polynuclear) is not desirable in aviation fuel, because it has

  • (A) High pour point and low smoke point
  • (B) Low viscosity index
  • (C) High self-ingnition temperature
  • (D) All of the above
πŸ’¬ Discuss
βœ… Correct Answer: (B) Low viscosity index

Q. Which of the following is desirable in petrol (gasoline) but undesirable in kerosene?

  • (A) Paraffins
  • (B) Aromatics
  • (C) Mercaptans
  • (D) Naphthenic acid
πŸ’¬ Discuss
βœ… Correct Answer: (B) Aromatics

Q. Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about __________ ptb (pounds per thousand barrel).

  • (A) 0.03
  • (B) 3
  • (C) 35
  • (D) 70
πŸ’¬ Discuss
βœ… Correct Answer: (B) 3

Q. Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning ti in a standard wick lamp at a standard rate for 24 hours. Char value of a good quality kerosene should be less than ___________________ mg/kg of kerosene.

  • (A) 1
  • (B) 20
  • (C) 100
  • (D) 500
πŸ’¬ Discuss
βœ… Correct Answer: (B) 20

Q. Gasoline yield in catalytic reforming of naphtha may be about _______________ percent by weight.

  • (A) 50
  • (B) 65
  • (C) 85
  • (D) 98
πŸ’¬ Discuss
βœ… Correct Answer: (C) 85

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