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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.

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

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

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

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

  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

  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).

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

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

  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).

  15. Ca(OH)2 is called

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

  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

  19. Potassium is kept & transported under

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