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Chemical Engineering :: Petroleum Refinery Engineering

  1. Antioxidants are added in petrol to

  2. A.
    impart colour to it, for easy identification.
    B.
    minimise the gum formation.
    C.
    prevent icing of the carburettor.
    D.
    prevent the lead build up in engines.

  3. Gasoline extracted from natural gas (by compression and cooling) is called the __________ gasoline.

  4. A.
    polymer
    B.
    unleaded
    C.
    casing head
    D.
    straight run

  5. Which of the following categories of gasoline has the highest lead susceptibility ?

  6. A.
    Straight run gasoline
    B.
    Platinum reformed gasoline
    C.
    Catalytical cracked gasoline
    D.
    Polymer gasoline

  7. Gum formation in stored gasoline is mainly due to the

  8. A.
    alkylation of unsaturates.
    B.
    presence of sulphur.
    C.
    oxidation & polymerisation of unsaturates.
    D.
    higher aromatic content.

  9. Flash point of an oil is determined by the

  10. A.
    Pensky Martens apparatus.
    B.
    Ramsbottom apparatus.
    C.
    Saybolt viscometer.
    D.
    Conradson apparatus.

  11. Straight run naphtha is converted into high octane number petrol (gasoline) by catalytic

  12. A.
    cracking
    B.
    polymerisation
    C.
    reforming
    D.
    isomerisation

  13. During electrical desalting of crude oil, the electrical conductivity of a mixture of crude oil and water (which ranges between 3 to 8% water) __________ with increase in the amount of water.

  14. A.
    decreases
    B.
    increases
    C.
    remains unchanged
    D.
    decreases linearly

  15. Dearomatisation of kerosene (by liquid sulphur dioxide extraction) is done to

  16. A.
    increase its smoke point.
    B.
    improve its oxidation stability.
    C.
    decrease the breathing loss.
    D.
    none of these.