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Chemical Engineering :: Petroleum Refinery Engineering

  1. In hydrofining catalytic desulphurisation process for sweetening of petroleum products, use of hydrogen

  2. A.
    enhances the desulphurisation process.
    B.
    minimises coke formation.
    C.
    both (a) and (b).
    D.
    neither (a) nor (b).

  3. The yield of straight run LPG from crude oil is about __________ weight percent.

  4. A.
    20-25
    B.
    1-1.5
    C.
    10-15
    D.
    0.1-0.2

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

  6. A.
    solvent extraction
    B.
    sweating
    C.
    resettling
    D.
    all (a), (b) & (c)

  7. Smoke volatility index is equal to smoke point plus

  8. A.
    0.42 x(% distilled at 204°C)
    B.
    5 mm
    C.
    0.84 x (% distilled at 204°C)
    D.
    10 mm. approximately

  9. Mercaptans are added to liquefied petroleum gas (LPG) to

  10. A.
    reduce its cost.
    B.
    narrow down its explosion limit.
    C.
    assist in checking its leakage from cylinder.
    D.
    increase its calorific value.

  11. Absolute vapor pressure of petrofuels is found by Reid bomb which is heated in water bath to 100°F. In Reid apparatus, the ratio of the volume of air chamber to that of the liquid fuel chamber is

  12. A.
    1
    B.
    2
    C.
    3
    D.
    4

  13. Doctor's solution used for sweetening of petroleum products is

  14. A.
    sodium plumbite
    B.
    sodium sulphite
    C.
    sodium thiosulphate
    D.
    lead sulphate

  15. Smoke point of kerosene expresses its

  16. A.
    burning characteristics.
    B.
    luminosity characteristics.
    C.
    aromatic content directly.
    D.
    lamp wick wetting characteristics.

  17. The characterisation factor of a crude oil is calculated as 12.5. It means that; it is

  18. A.
    paraffinic
    B.
    naphthenic
    C.
    intermediate
    D.
    none of these

  19. Which of the following has the highest octane number ?

  20. A.
    Aromatics
    B.
    i-paraffins
    C.
    Naphthenes
    D.
    Olefins
    E.
    n-paraffins