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Chemical Engineering :: Petroleum Refinery Engineering

  1. Aniline point of the diesel is a measure of its __________ content.

  2. A.
    aromatic
    B.
    paraffin
    C.
    olefin
    D.
    naphthene

  3. Presence of sulphur in gasoline

  4. A.
    leads to corrosion.
    B.
    increases lead susceptibility.
    C.
    decreases gum formation.
    D.
    helps during stabilisation.

  5. Which of the following additives improves the cetane number of diesel ?

  6. A.
    Amyl nitrate
    B.
    Ethyl mercaptan
    C.
    Napthenic acid
    D.
    Tetra ethyl lead

  7. In catalytic cracking process, olefins crack __________ times faster than in thermal cracking process.

  8. A.
    100
    B.
    200-300
    C.
    1000-10000
    D.
    10

  9. Choose the correct statement.

  10. A.
    Coking tendency increases with increasing molecular weight.
    B.
    Coking tendency decreases with increasing molecular weight.
    C.
    Higher pressure enhances coke formation.
    D.
    Coking is an exothermic reaction.

  11. In catalytic alkylation, higher iso-butane to olefin ratio gives

  12. A.
    low final boiling point product
    B.
    higher yield
    C.
    both (a) and (b)
    D.
    neither (a) nor (b)

  13. In case of liquid petrofuels, momentary combustion is observed at its

  14. A.
    flash point.
    B.
    preheating temperature corresponding to viscosity of 25 centistokes.
    C.
    flame temperature.
    D.
    fire point.

  15. Polymerisation

  16. A.
    produces i-octane from cracked gases containing i-butane and butene.
    B.
    causes olefins to combine with each other.
    C.
    causes aromatics to combine with each other.
    D.
    is aimed at producing lubricating oil.

  17. Both asphalt and wax are produced by __________ base crude oils.

  18. A.
    naphthenic
    B.
    asphalt
    C.
    paraffin
    D.
    mixed

  19. Which one is preferred for aircraft engine ?

  20. A.
    High viscosity index lube oil.
    B.
    Low viscosity index lube oil.
    C.
    High freezing point aviation fuel.
    D.
    None of these.