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Petroleum Refinery Engineering problems

  • 1. Waxy crudes are treated with chemical additives mainly to

  • Options
  • A. depress its pour point
  • B. dissolve wax
  • C. precipitate wax
  • D. remove wax
    • Discuss
  • 2. Pick out the wrong statement.

  • Options
  • A. A pale color of petroleum product indicates lower viscosity.
  • B. Color of petroleum products indicates the degree of refinement.
  • C. Lighter petroleum distillates are lighter in color than the heavier residual oils.
  • D. Flouroscene of oils helps to detect its adulteration.
    • Discuss
  • 3. Water content in the crude oil as it comes out of oil well may be upto __________ percent.

  • Options
  • A. 2
  • B. 5
  • C. 10
  • D. 25
    • Discuss
  • 4. A multigrade lubricating oil means an oil having high

  • Options
  • A. viscosity index
  • B. viscosity
  • C. aniline point
  • D. flash point
    • Discuss
  • 5. Reforming converts

  • Options
  • A. olefins into paraffins
  • B. naphthenes into aromatics
  • C. naphthenes into olefins.
  • D. naphthenes into paraffin.
    • Discuss
  • 6. Ethyl mercaptan is added to the Doctor negative LPG for facilitating the detection of its leakage (by bad odour) to the extent of about __________ ppm.

  • Options
  • A. 1
  • B. 50
  • C. 5000
  • D. 10000
    • Discuss
  • 7. Reforming

  • Options
  • A. uses naphtha as feedstock.
  • B. does not much affect the molecular weight of the feed.
  • C. improves the quality & yield of gasoline.
  • D. all (a), (b) and (c).
    • Discuss
  • 8. __________ treatment is done for appreciable improvement in viscosity index of lubricating oil.

  • Options
  • A. Acid
  • B. Solvent extraction
  • C. Alkali
  • D. Clay
    • Discuss
  • 9. Which of the following is the easiest to crack?

  • Options
  • A. Paraffins
  • B. Olefins
  • C. Naphthenes
  • D. Aromatics
    • Discuss
  • 10. CnH2n is the general formula for

  • Options
  • A. olefins
  • B. naphthenes
  • C. both (a) and (b)
  • D. neither (a) nor (b)
    • Discuss

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