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  • Question
  • Smoke point of a test sample of kerosene is found to be 15 mm. On removal of __________ from it, the smoke point rises to 25 mm.


  • Options
  • A. n-paraffins
  • B. olefins
  • C. aromatics
  • D. none of these

  • Correct Answer
  • aromatics 


  • Petroleum Refinery Engineering problems


    Search Results


    • 1. 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
    • 2. 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
    • 3. 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
    • 4. 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
    • 5. 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
    • 6. The main use of heavy gas oil produced by the vacuum distillation unit is as a

    • Options
    • A. blending component for kerosene.
    • B. blending component for petrol.
    • C. feedstock for fluid catalytic cracking unit.
    • D. none of these.
    • Discuss
    • 7. Solvent used in the deasphalting process is

    • Options
    • A. furfurol
    • B. phenol
    • C. propane
    • D. hexane
    • Discuss
    • 8. Flash point of motor gasoline may be around __________ °C.

    • Options
    • A. 10
    • B. 45
    • C. 100
    • D. 150
    • Discuss
    • 9. The colour of gasoline is an indication of its

    • Options
    • A. octane number.
    • B. lead susceptibility.
    • C. gum forming tendency & thoroughness of refining.
    • D. none of these.
    • Discuss
    • 10. In petroleum refining, the process used for conversion of hydrocarbons to aromatics is

    • Options
    • A. catalytic cracking
    • B. catalytic reforming
    • C. hydrotreating
    • D. alkylation
    • Discuss


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