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Chemical Engineering :: Chemical Process

  1. Pick out the wrong statement.

  2. A.
    Pasteurisation of milk involves moderate heating followed by cooling.
    B.
    Bakeries and breweries make use of yeasts.
    C.
    Enzyme is a complex nitrogenous compound.
    D.
    Oils and fats are alkaloids.

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  3. Which of the following, when pyrolysed, produces perchloro-ethylene ?

  4. A.
    Ethylene dichloride
    B.
    Chlorobenzene
    C.
    Carbon tetrachloride
    D.
    Chlorinated paraffin

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  5. Chemical name of aspirin (an analgesic drug) is

  6. A.
    acetylsalicylic acid
    B.
    nictonic acid
    C.
    calcium acetate
    D.
    methyl salicylate

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  7. Which is the most efficient absorbant for SO3 out of the following ?

  8. A.
    20% oleum
    B.
    65% oleum
    C.
    78%H2SO4
    D.
    98%H2SO4

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  9. Coal tar is used as a

  10. A.
    binding material for coal briquettes.
    B.
    fuel in rotary kiln.
    C.
    binder in making carbon electrodes.
    D.
    all (a), (b) and (c).

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  11. Caprolactum (a raw material for nylon-6 manufacture) is produced from

  12. A.
    phenol
    B.
    naphthalene
    C.
    benzene
    D.
    pyridine

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  13. The purpose of adding Na2CO3 to water of low alkalinity is to

  14. A.
    permit the use of alum as a coagulant.
    B.
    increase the softening capacity of zeolite.
    C.
    facilitate easy regeneration of zeolite.
    D.
    all (a), (b) and (c).

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  15. Ca(OH)2 is called

  16. A.
    quicklime
    B.
    slaked lime
    C.
    limestone
    D.
    gypsum

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  17. Percentage of uranium in carnotite ore found in Jadugoda (Jharkhand) is about

  18. A.
    0.1 to 0.5
    B.
    1 to 5
    C.
    5 to 10
    D.
    15 to 25

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  19. Potassium is kept & transported under

  20. A.
    water
    B.
    liquid ammonia
    C.
    kerosene oil
    D.
    alcohol

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