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Petroleum Refinery Engineering problems


  • 1. Which of the followingis desirable in petrol (gasoline) but undesirable in kerosene?

  • Options
  • A. Paraffins
  • B. Aromatics
  • C. Mercaptans
  • D. Naphthenic acid
  • Discuss
  • 2. Which parameter is used for the grading of paraffin waxes?

  • Options
  • A. Specific gravity
  • B. Melting point
  • C. Viscosity
  • D. Penetration number
  • Discuss
  • 3. Higher boiling fractions like atmospheric residue is distilled under vacuum at low temperature because at high temperature, there is a tendency of the predominance of

  • Options
  • A. thermal cracking
  • B. gum formation
  • C. coking
  • D. discoloration
  • Discuss
  • 4. Tetraethyl lead is added to the petrol to increase its octane number, because its octane number is

  • Options
  • A. more than 100
  • B. round about 100
  • C. between 50 and 100
  • D. less than 25
  • Discuss
  • 5. Which of the following gasolines (unleaded) has the least octane number?

  • Options
  • A. Catalytically cracked gasoline
  • B. Straight run gasoline
  • C. Catalytically reformed gasoline
  • D. Polymer gasoline
  • Discuss
  • 6. Asphalts are

  • Options
  • A. low molecular weight & low boiling point compounds present in petroleum.
  • B. desirable in catalytic cracking feedstock, because they produce coke.
  • C. readily oxidisable and form carbonaceous sludge.
  • D. all (a), (b) & (c).
  • Discuss
  • 7. Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about __________ ptb (pounds per thousand barrel).

  • Options
  • A. 0.03
  • B. 3
  • C. 35
  • D. 70
  • Discuss
  • 8. Products drawn from the top to bottom of the crude oil distillation column has progressively increasing

  • Options
  • A. boiling points
  • B. molecular weight
  • C. C/H ratio
  • D. all (a), (b) and (c)
  • Discuss
  • 9. Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it 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.

  • Options
  • A. 1
  • B. 20
  • C. 100
  • D. 500
  • Discuss
  • 10. Which of the following is the most important property for a jet fuel?

  • Options
  • A. Cloud point
  • B. Pour point
  • C. Colour
  • D. Freezing point
  • Discuss

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