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  • Question
  • The most widely used crude topping column in refineries is the __________ column.


  • Options
  • A. bubble-cap
  • B. packed bed
  • C. fluidised bed
  • D. perforated plate

  • Correct Answer
  • bubble-cap 


  • Petroleum Refinery Engineering problems


    Search Results


    • 1. Preheating temperature of medium viscosity furnace oil for better atomisation through burner is about __________ °C.

    • Options
    • A. 50
    • B. 70
    • C. 90
    • D. 140
    • Discuss
    • 2. Equal volumes of aniline and diesel oil when mixed at room temperature (during summer) was found to be completely mis-cible. It means that the aniline point of the diesel is __________ the room temperature.

    • Options
    • A. more than
    • B. less than
    • C. same as
    • D. either more or less; depends on the room temperature
    • Discuss
    • 3. Naphthenic acid is a/an __________ compound.

    • Options
    • A. sulphur
    • B. nitrogen
    • C. oxygen
    • D. none of these
    • Discuss
    • 4. Flash point of an oil is determined by the

    • Options
    • A. Pensky Martens apparatus.
    • B. Ramsbottom apparatus.
    • C. Saybolt viscometer.
    • D. Conradson apparatus.
    • Discuss
    • 5. Feedstock for the production of biodiesel is

    • Options
    • A. herbal plants
    • B. used vegetable oils
    • C. LSHS
    • D. bagasse
    • Discuss
    • 6. Crude oil is transported inland from oil field to refineries, mainly by the

    • Options
    • A. road tankers
    • B. rail tankers
    • C. underground pipelines
    • D. none of these
    • Discuss
    • 7. Catalyst used in catalytic polymerisation which produces polymer gasoline is

    • Options
    • A. H2SO4
    • B. H3PO4
    • C. both (a) and (b)
    • D. AlCl3
    • Discuss
    • 8. Petrolatum is

    • Options
    • A. same as petroleum ether.
    • B. petroleum coke.
    • C. a mixture of microcrystalline wax in viscous hydrocarbon liquids.
    • D. none of these.
    • Discuss
    • 9. Dearomatisation of kerosene (by liquid sulphur dioxide extraction) is done to

    • Options
    • A. increase its smoke point.
    • B. improve its oxidation stability.
    • C. decrease the breathing loss.
    • D. none of these.
    • Discuss
    • 10. Testing of the knocking characteristics of petrofuels is done in a __________ engine.

    • Options
    • A. Carnot
    • B. CFR (Co-operative fuel research)
    • C. Stirling
    • D. diesel
    • Discuss


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