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  • Question
  • In the atmospheric pressure crude distillation, the content of __________ from lighter fraction to heavier ones.


  • Options
  • A. sulphur increases
  • B. sulphur decreases
  • C. nitrogen decreases
  • D. none of these

  • Correct Answer
  • sulphur increases 


  • Petroleum Refinery Engineering problems


    Search Results


    • 1. __________ determination is not a very significant and important test for gasoline.

    • Options
    • A. Gum & sulphur content
    • B. Viscosity
    • C. Octane number
    • D. Reid vapor pressure
    • Discuss
    • 2. Diesel index.(an alternative index for expressing the quality of diesel) is

    • Options
    • A. determined by using a test engine.
    • B. not related to aniline point.
    • C. equal to cetane number plus 3.
    • D. all (a), (b) & (c).
    • Discuss
    • 3. Power required to drive a ball mill with a particular ball load is proportional to (where, D = diameter of ball mill )

    • Options
    • A. D
    • B. 1/D
    • C. D2.5
    • D. 1/D2.5
    • Discuss
    • 4. Tabular bowl centrifuges as compared to disk bowl centrifuges

    • Options
    • A. operate at higher speed.
    • B. employ bowl of larger diameter.
    • C. can not be operated under pressure/vacuum.
    • D. can't be used for separation of fine suspended solids from a liquid.
    • Discuss
    • 5. Jigging is a technique by which different particles can be

    • Options
    • A. separated by particle size.
    • B. separated by particle density.
    • C. separated by particle shape.
    • D. mixed.
    • Discuss
    • 6. Which of the following tests is not done for transformer oil?

    • Options
    • A. Flash point and acid value.
    • B. Aniline point.
    • C. Dielectric strength.
    • D. Copper strip corrosion test.
    • Discuss
    • 7. Solvent used in duo-sol extraction for lube oil upgradation is a mixture of

    • Options
    • A. propane & phenol-cresol mixture.
    • B. methyl ethyl ketone & glycol.
    • C. phenol & furfural.
    • D. propane & liquid sulphur dioxide.
    • Discuss
    • 8. Which of the following is used as a catalyst in fluidised bed catalytic cracking?

    • Options
    • A. Silica-magnesia
    • B. Silica-alumina
    • C. Bentonite clays
    • D. All (a), (b) and (c)
    • Discuss
    • 9. Which of the following constituents present in petroleum is responsible for ash formation?

    • Options
    • A. Nitrogen compounds
    • B. Organometallic compounds
    • C. Sulphur compounds
    • D. Oxygen compounds
    • Discuss
    • 10. Catalytic desulphurisation process used for sweetening of straight run gasoline and kerosene uses __________ as catalyst.

    • Options
    • A. bauxite
    • B. fuller's earth
    • C. activated clay
    • D. all (a), (b) & (c)
    • Discuss


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