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Chemical Engineering :: Chemical Process

  1. The most widely used coagulant for removing suspended impurities from water is

  2. A.
    bleaching powder
    B.
    chlorine
    C.
    calcium sulphate
    D.
    alum

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  3. Main constituent of limestone is

  4. A.
    CaCO3
    B.
    MgCO3
    C.
    Na2CO3
    D.
    CaSO4

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  5. __________ is obtained as a by-product in the manufacture of sodium hydroxide using brine.

  6. A.
    Chlorine
    B.
    Ammonium chloride
    C.
    Sodium carbonate
    D.
    Sodium bi-carbonate

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  7. Fat splitting catalyst is

  8. A.
    CaCO3
    B.
    ZnO
    C.
    Al2O3
    D.
    Fe

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  9. Phthalic anhydride is used

  10. A.
    in making PVC
    B.
    as plasticisers
    C.
    in insecticides manufacture
    D.
    for making nylon-6

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  11. Penicillin is separated from fermented broth by

  12. A.
    extraction with amyl or butyl acetate.
    B.
    ternery azeotropic distillation.
    C.
    evaporation in calendria.
    D.
    extractive distillation.

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  13. __________ process is used for producing soda ash.

  14. A.
    Chamber
    B.
    Chance
    C.
    Tromp
    D.
    Solvay

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  15. Bleaching powder (chemically known as calcium chloro hypochlorite) is commercially produced by the action of chlorine on

  16. A.
    slaked lime
    B.
    soda lime
    C.
    calcium perchlorate
    D.
    none of these

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  17. Which of the following is an unsaturated fatty acid ?

  18. A.
    Lauric acid
    B.
    Palmitic acid
    C.
    Stearic acid
    D.
    Oleic acid

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  19. The yield of tar from high temperature carbonisation of dry coal is about __________ percent.

  20. A.
    3
    B.
    12
    C.
    22
    D.
    0.3

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