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  • Question
  • Furfural solvent extraction is used for upgrading (by dissolving aromatics)


  • Options
  • A. naphtha
  • B. lubricating oils
  • C. wax
  • D. cracking feedstock

  • Correct Answer
  • lubricating oils 


  • Petroleum Refinery Engineering problems


    Search Results


    • 1. Pour point and freezing point is equal for

    • Options
    • A. petrol
    • B. diesel
    • C. water
    • D. crude petroleum
    • Discuss
    • 2. Cetane number of diesel used in trucks may be about

    • Options
    • A. 50
    • B. 14
    • C. 35
    • D. 85
    • Discuss
    • 3. Casing head gasoline is the liquid

    • Options
    • A. butane.
    • B. propane.
    • C. natural gas.
    • D. gasoline separated from wet natural gas by compression.
    • Discuss
    • 4. Mercaptans are

    • Options
    • A. low boiling sulphur compounds.
    • B. added in LPG cylinders to detect gas leakage by its smell.
    • C. undesirable in petrol, as they reduce its octane number.
    • D. all (a), (b) and (c)
    • Discuss
    • 5. Octane number of gasoline is a measure of its

    • Options
    • A. resistance to knock.
    • B. ignition delay.
    • C. ignition temperature.
    • D. smoke point.
    • Discuss
    • 6. The octane number of aviation gasoline may be

    • Options
    • A. 79
    • B. 87
    • C. 97
    • D. >100
    • Discuss
    • 7. Which of the following fractions of a crude oil will have the maximum gravity API (i.e. °API)?

    • Options
    • A. Diesel
    • B. Gasoline
    • C. Atmospheric gas oil
    • D. Vacuum gas oil
    • Discuss
    • 8. Flash point of an oil gives an idea of the

    • Options
    • A. nature of boiling point diagram of the system.
    • B. amount of low boiling fraction present.
    • C. explosion hazards.
    • D. all (a), (b) and (c).
    • Discuss
    • 9. Illuminating characteristics of kerosene is expressed by its

    • Options
    • A. smoke point
    • B. aniline point
    • C. luminosity number
    • D. aromatic content
    • Discuss
    • 10. Which is the most undesirable component in kerosene?

    • Options
    • A. Aromatics
    • B. i-paraffins
    • C. n-paraffins
    • D. Naphthenes
    • Discuss


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