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Chemical Engineering :: Petroleum Refinery Engineering

Petroleum Refinery Engineering - Section 1
Petroleum Refinery Engineering - Section 2
Petroleum Refinery Engineering - Section 3
Petroleum Refinery Engineering - Section 4
Petroleum Refinery Engineering - Section 5
Petroleum Refinery Engineering - Section 6
Petroleum Refinery Engineering - Section 7

  1. Presence of aromatics in

    2. A.
    diesel increases its cetane number.
    B.
    kerosene increases its smoke point.
    C.
    petrol increases its octane number.
    D.
    all (a), (b) and (c).

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  2. Choose the correct statement regarding thermal cracking.

    3. A.
    Moderate changes in operating temperature does not change the depth of cracking.
    B.
    Increased residence time results in the decreased severity of cracking.
    C.
    At low pressure, the yield of lighter hydrocarbons are more.
    D.
    Greater depth of cracking gives lower octane number gasoline.

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  3. A typical yield of diesel in straight run distillation of crude oil may be about __________ percent.

    4. A.
    8
    B.
    18
    C.
    28
    D.
    35

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  4. Which is almost absent in crude petroleum?

    5. A.
    Olefins
    B.
    Mercaptans
    C.
    Naphthenes
    D.
    Cycloparaffins

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  5. Naphthenic acid is a/an __________ compound.

    6. A.
    sulphur
    B.
    nitrogen
    C.
    oxygen
    D.
    none of these

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  6. Glycol added to petrol acts as a/an __________ agent.

    7. A.
    anti-knocking
    B.
    anti-icing
    C.
    anti-gum forming
    D.
    dewaxing

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  7. Catalytic cracking compared to thermal cracking of residue of vacuum distillation of crude oil

    8. A.
    gives higher yield of petrol.
    B.
    lower octane number of petrol.
    C.
    higher sulphur content in the product.
    D.
    higher gum forming material in petrol.

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  8. Which one is used to determine the colour of petroleum products ?

    9. A.
    Colour comparator
    B.
    Saybolt chromometer
    C.
    Cleveland apparatus
    D.
    None of these

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  9. Pick out the wrong statement.

    10. A.
    Iso-paraffin crack faster than n-paraf-fin.
    B.
    Catalytic cracking is endothermic, but the regeneration of catalyst is exothermic.
    C.
    Rate of decomposition of olefins in catalytic cracking is slightly slower than the thermal cracking.
    D.
    None of these.

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  10. Feedstock for the production of biodiesel is

    11. A.
    herbal plants
    B.
    used vegetable oils
    C.
    LSHS
    D.
    bagasse

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