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Petroleum Refinery Engineering problems

  • 1. Octane number of gasoline produced by two stage fluidised catalytic cracking process is

  • Options
  • A. 80
  • B. 87
  • C. 92
  • D. 97
    • Discuss
  • 2. Gum formation in stored gasoline is mainly due to the

  • Options
  • A. alkylation of unsaturates.
  • B. presence of sulphur.
  • C. oxidation & polymerisation of unsaturates.
  • D. higher aromatic content.
    • Discuss
  • 3. Which of the following is desirable in diesel and kerosene but is undersirable in gasoline?

  • Options
  • A. Aromatics
  • B. Mercaptans
  • C. Paraffins
  • D. Naphthenic acid
    • Discuss
  • 4. Main boring diameter for petroleum well is 20-30 cms in diameter, while the depth of the oil well may be about __________ kms.

  • Options
  • A. 0.1 to 0.5
  • B. 1.5 to 4.5
  • C. 7.5 to 12.5
  • D. 15-20
    • Discuss
  • 5. Pick out the wrong statement.

  • Options
  • A. Iso-paraffin crack faster than n-paraf-fin.
  • B. Catalytic cracking is endothermic, but the regeneration of catalyst is exothermic.
  • C. Rate of decomposition of olefins in catalytic cracking is slightly slower than the thermal cracking.
  • D. None of these.
    • Discuss
  • 6. Pick out the wrong statement.

  • Options
  • A. Higher specific gravity of petroleum products means higher C/H ratio.
  • B. Aromatics have lower specific gravity than corresponding paraffins.
  • C. Hydrocarbons of low specific gravity (e.g, paraffins) possess the maximum thermal energy per unit volume.
  • D. Hydrocarbons of high specific gravity (eg, aromatics) possess the maximum thermal energy per unit weight.
    • Discuss
  • 7. Gasoline extracted from natural gas (by compression and cooling) is called the __________ gasoline.

  • Options
  • A. polymer
  • B. unleaded
  • C. casing head
  • D. straight run
    • Discuss
  • 8. Olefins are

  • Options
  • A. saturated hydrocarbons.
  • B. unsaturated cyclic compounds (hydrocarbons).
  • C. present in substantially good quantity in crude petroleum.
  • D. none of these.
    • Discuss
  • 9. Solvent used for dewaxing of petroleum products are

  • Options
  • A. furfural
  • B. methyl ethyl ketone (MEK)
  • C. propane
  • D. both(b)&(c)
    • Discuss
  • 10. Which of the following categories of gasoline has the highest lead susceptibility?

  • Options
  • A. Straight run gasoline
  • B. Platinum reformed gasoline
  • C. Catalytical cracked gasoline
  • D. Polymer gasoline
    • Discuss

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