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Home Chemical Engineering Petroleum Refinery Engineering Comments

  • Question
  • Hydrofining is the most recent and effective method for the


  • Options
  • A. removal of sulphur.
  • B. improvement of smoke point.
  • C. reduction of breathing loss.
  • D. improvement of viscosity index.

  • Correct Answer
  • removal of sulphur. 


  • Petroleum Refinery Engineering problems


    Search Results


    • 1. Deoiling is the process of removal of oil from wax. It is done by the __________ process.

    • Options
    • A. solvent extraction
    • B. sweating
    • C. resettling
    • D. all (a), (b) & (c)
    • Discuss
    • 2. The doctor's solution comprises of sodium plumbite in

    • Options
    • A. alcohal
    • B. water
    • C. aqueous caustic soda
    • D. soda ash
    • Discuss
    • 3. In hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen

    • Options
    • A. enhances the desulphurisation process.
    • B. minimises coke formation.
    • C. both (a) and (b).
    • D. neither (a) nor (b).
    • Discuss
    • 4. The characterisation factor of a crude oil is calculated as 12.5. It means that; it is

    • Options
    • A. paraffinic
    • B. naphthenic
    • C. intermediate
    • D. none of these
    • Discuss
    • 5. The catalytic cracking of heavier petroleum fraction is done to produce mainly

    • Options
    • A. gasoline
    • B. asphalt
    • C. diesel oil
    • D. tar
    • Discuss
    • 6. The reservoir rock containing petroleum has

    • Options
    • A. low porosity
    • B. high permeability
    • C. high porosity
    • D. both (b) and (c)
    • Discuss
    • 7. Pick out the wrong statement.

    • Options
    • A. Aromatics have higher specific gravity than paraffins,
    • B. Gross calorific value (GCV) of petrofuels is equal to (12400 - 2100 ?2) where, ? is the specific gravity of the fuel at 15.5°C.
    • C. Heavier petrofuels have higher GCV on weight basis (i.e., Kcal/kg) but lower GCV on volume basis (i.e., Kcal/litre).
    • D. Higher specific gravity of petrofuels means higher C/H ratio.
    • Discuss
    • 8. Which is the most desirable component of a good quality kerosene?

    • Options
    • A. i-paraffins
    • B. Aromatics
    • C. n-paraffins
    • D. Naphthenes
    • Discuss
    • 9. Fuel oil is subjected to visbreaking to reduce its

    • Options
    • A. pour point
    • B. viscosity
    • C. pressure drop on pumping
    • D. all (a), (b) and (c)
    • Discuss
    • 10. Pour point of a petrofuel is

    • Options
    • A. multiple of 3°F.
    • B. multiple of 5°F.
    • C. 5°C below the temperature at which oil ceases to flow.
    • D. none of these.
    • Discuss


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