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Chemical Engineering :: Chemical Process

  1. Cooking liquor in case of sulphite process is

  2. A.
    sodium sulphite and sodium bisulphite.
    B.
    magnesium sulphite and free SO2 in acid medium.
    C.
    magnesium sulphate and magnessium bicarbonate.
    D.
    none of these.

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  3. 90% of the caprolactum is converted to nylon-6 on its condensation polymerisation in the reactor maintained at __________ °C.

  4. A.
    <0
    B.
    10-30
    C.
    250-280
    D.
    500-600

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  5. Vegetable oils contain large quantity of glycerides of unsaturated acids. When the vegetable oils contain high amount of saturated fatty acids, it is termed as __________ oil.

  6. A.
    drying
    B.
    semi-drying
    C.
    non-drying
    D.
    none of these

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  7. Fats as compared to oils have

  8. A.
    more unsaturated glycerides of fatty acids.
    B.
    less unsaturated glycerides of fatty acids.
    C.
    much higher reactivity to oxygen.
    D.
    lower melting point.

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  9. Thermal pyrolysis of ethylene dichloride produces

  10. A.
    trichloroethylene
    B.
    vinyl chloride
    C.
    ethanol amine
    D.
    ethylene oxide

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  11. The main component of pyrex glass is

  12. A.
    zinc
    B.
    lead
    C.
    boron
    D.
    celenium

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  13. Alum [Al2(SO4)3] is used as a coagulant in water treatment to remove

  14. A.
    colour
    B.
    turbidity
    C.
    bacteria
    D.
    all (a), (b) and (c)

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  15. __________ is an ore concentrating metallurgical process involving a chemical change.

  16. A.
    Electromagnetic separation
    B.
    Froth floatation
    C.
    Roasting
    D.
    none of these

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  17. Basic oxide is absent in __________ glass.

  18. A.
    flint
    B.
    pyrex
    C.
    quartz
    D.
    all (a), (b) & (c)

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  19. Graphite is a/an

  20. A.
    electrical insulator.
    B.
    allotrope of carbon.
    C.
    moderator used in nuclear reactor.
    D.
    both (b) and (c).

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