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  • Question
  • Which of the following is the most important property for a jet fuel?


  • Options
  • A. Cloud point
  • B. Pour point
  • C. Colour
  • D. Freezing point

  • Correct Answer
  • Freezing point 


  • Petroleum Refinery Engineering problems


    Search Results


    • 1. Char value of Kerosene is the amount of charred oil deposition on the wick obtained after burning it in a standard wick lamp at a standard rate for 24 hours. Char value of a good quality kerosene should be less than __________ mg/kg of kerosene.

    • Options
    • A. 1
    • B. 20
    • C. 100
    • D. 500
    • Discuss
    • 2. Products drawn from the top to bottom of the crude oil distillation column has progressively increasing

    • Options
    • A. boiling points
    • B. molecular weight
    • C. C/H ratio
    • D. all (a), (b) and (c)
    • Discuss
    • 3. Salt content (measured as sodium chloride) in electrically desalted crude oil comes down to a level of about __________ ptb (pounds per thousand barrel).

    • Options
    • A. 0.03
    • B. 3
    • C. 35
    • D. 70
    • Discuss
    • 4. Asphalts are

    • Options
    • A. low molecular weight & low boiling point compounds present in petroleum.
    • B. desirable in catalytic cracking feedstock, because they produce coke.
    • C. readily oxidisable and form carbonaceous sludge.
    • D. all (a), (b) & (c).
    • Discuss
    • 5. Which of the following gasolines (unleaded) has the least octane number?

    • Options
    • A. Catalytically cracked gasoline
    • B. Straight run gasoline
    • C. Catalytically reformed gasoline
    • D. Polymer gasoline
    • Discuss
    • 6. The most important property for a jet fuel is its

    • Options
    • A. viscosity
    • B. freezing point
    • C. calorific value
    • D. flash point
    • Discuss
    • 7. Which of the following reactions is undesirable in the production of catalytically reformed gasoline?

    • Options
    • A. Dehydrogenation of naphthene
    • B. Dehydrogenation of lower paraffins
    • C. Dehydrocyclisation of higher paraffins
    • D. Isomerisation of paraffins
    • Discuss
    • 8. The main reaction in reforming is the

    • Options
    • A. dehydrogenation of naphthenes.
    • B. hydrogenation of naphthenes.
    • C. hydrocracking of paraffins.
    • D. saturation of olefins.
    • Discuss
    • 9. Thermofer catalytic cracking process is a __________ process.

    • Options
    • A. fixed bed
    • B. moving bed
    • C. fluidised bed
    • D. non-catalytic
    • Discuss
    • 10. Which of the following has the minimum °API gravity of all?

    • Options
    • A. Diesel
    • B. Kerosene
    • C. Petrol
    • D. Furnace oil
    • Discuss


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