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  • Question
  • 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.

  • Correct Answer
  • Heavier petrofuels have higher GCV on weight basis (i.e., Kcal/kg) but lower GCV on volume basis (i.e., Kcal/litre). 


  • Petroleum Refinery Engineering problems


    Search Results


    • 1. The reservoir rock containing petroleum has

    • Options
    • A. low porosity
    • B. high permeability
    • C. high porosity
    • D. both (b) and (c)
    • Discuss
    • 2. 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.
    • Discuss
    • 3. 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
    • 4. The doctor's solution comprises of sodium plumbite in

    • Options
    • A. alcohal
    • B. water
    • C. aqueous caustic soda
    • D. soda ash
    • Discuss
    • 5. 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
    • 6. Which is the most desirable component of a good quality kerosene?

    • Options
    • A. i-paraffins
    • B. Aromatics
    • C. n-paraffins
    • D. Naphthenes
    • Discuss
    • 7. 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
    • 8. 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
    • 9. Clay treatment of petroleum products

    • Options
    • A. decolorises & stabilises cracked gasoline.
    • B. desulphurise straight run gasoline & kerosene.
    • C. adsorb arsenic from feedstock to catalytic reforming.
    • D. all (a), (b) & (c).
    • Discuss
    • 10. LPG stands for

    • Options
    • A. liquid petroleum gas
    • B. liquified petrol gas
    • C. liquid petrol gas
    • D. liquefied petroleum gas
    • Discuss


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