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Home Chemical Engineering Petroleum Refinery Engineering Comments

  • Question
  • Increase in the specific gravity of petroleum products indicates


  • Options
  • A. decrease in paraffin content.
  • B. increase in thermal energy per unit weight.
  • C. increase in aromatic content.
  • D. higher H/C ratio.

  • Correct Answer
  • decrease in paraffin content. 


  • Petroleum Refinery Engineering problems


    Search Results


    • 1. The main purpose of recycling the byproduct hydrogen gas in the reformer reactor is to

    • Options
    • A. obviate catalyst poisoning.
    • B. maintain the reaction temperature.
    • C. sustain the reactor pressure.
    • D. hydrogenate the feed stock.
    • Discuss
    • 2. The general formula of naphthenes is

    • Options
    • A. CnH2n + 2
    • B. CnH2n-6 (where, n ? 6)
    • C. CnHn-4
    • D. same as that for olefins i.e. CnH2n
    • Discuss
    • 3. Which of the following is an additive used for improving the cetane number of diesel?

    • Options
    • A. Tetraethyl lead
    • B. Tetramethyllead
    • C. Ethyl nitrate or acetone
    • D. None of these
    • Discuss
    • 4. Hydrocracking employs

    • Options
    • A. high pressure & temperature.
    • B. low pressure & temperature.
    • C. high pressure and low temperature.
    • D. high temperature and low pressure.
    • Discuss
    • 5. Pick out the correct statement pertaining to catalytic cracking.

    • Options
    • A. With increase in the reactor pressure, octane number of gasoline decreases.
    • B. With increase in the reactor temperature, gasoline yield decreases for a given conversion.
    • C. Percentage conversion increases with increase in the catalyst to oil ratio.
    • D. all (a), (b) and (c).
    • Discuss
    • 6. Crude topping column operates at __________ pressure.

    • Options
    • A. atmospheric
    • B. 10 atm
    • C. vacuum
    • D. 3 atm.
    • Discuss
    • 7. Petroleum liquid fuels having flash point greater than 66°C is considered as safe during storage and handling. Which of the following has flash point > 66°C?

    • Options
    • A. Naphtha
    • B. Petrol
    • C. Kerosene
    • D. Heavy fuel oil
    • Discuss
    • 8. True vapour pressure of a petroleum fraction __________ Reid vapour pressure.

    • Options
    • A. is less than
    • B. is more than
    • C. is same as
    • D. may be either more or less than
    • Discuss
    • 9. Methyl tertiary butyl ether (MTBE), a high octane (octane no. = 115) gasoline blending component is produced by the simple additive reaction of isobutylene with

    • Options
    • A. methyl alcohol
    • B. ethyl alcohol
    • C. methane
    • D. ethane
    • Discuss
    • 10. Which of the following is the most widely used cracking process in oil refineries?

    • Options
    • A. Dubbs process.
    • B. T.C.C. moving bed process.
    • C. Fluidised bed catalytic cracking process.
    • D. Houdry's fixed bed process.
    • Discuss


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