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Chemical Engineering :: Chemical Process

Chemical Process - Section 1
Chemical Process - Section 2
Chemical Process - Section 3
Chemical Process - Section 4
Chemical Process - Section 5
Chemical Process - Section 6
Chemical Process - Section 7
Chemical Process - Section 8
Chemical Process - Section 9
Chemical Process - Section 10
Chemical Process - Section 11
Chemical Process - Section 12
Chemical Process - Section 13
Chemical Process - Section 14
Chemical Process - Section-15

  1. DDT stands for

    2. A.
    diethyl-diphenyl-trichloromethane.
    B.
    dichloro-diphenyl-trichloromethane.
    C.
    diphenyl-dichloro-trichloromethane.
    D.
    dichloro-diphenyl-trichloroethane.

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  2. Phosphoric acid is prepared from

    3. A.
    cryolite
    B.
    chalcopyrite
    C.
    rock phosphate
    D.
    none of these

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  3. Metallic soap (e.g. aluminium or calcium salts of fatty acids) can be used

    4. A.
    as a lubricant.
    B.
    as a rust preventive.
    C.
    in hard water for cleaning of cloth.
    D.
    as a foam depressant in distillation column.

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  4. Which of the following processes does not produce Cl2 as a co-product during the manufacture of caustic soda ?

    5. A.
    Diaphragm electrolytic cell process
    B.
    Mercury electrolytic cell process
    C.
    Lime-soda process
    D.
    None of these

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  5. Bleaching action of bleaching powder is due to its __________ properties.

    6. A.
    reducing
    B.
    oxidising
    C.
    disinfecting
    D.
    none of these

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  6. Solvent extracted oil

    7. A.
    has low free fatty acid content.
    B.
    is odourless.
    C.
    has more of unsaturates.
    D.
    none of these.

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  7. Which of the following is not required in the manufacture of soda ash by Solvay process ?

    8. A.
    Ammonia
    B.
    Limestone
    C.
    Nitric acid
    D.
    None of these

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  8. Saponification number of an oil or fat

    9. A.
    gives an idea about its molecular weight.
    B.
    is inversely proportional to its molecular weight.
    C.
    detects its adulteration.
    D.
    all (a), (b) & (c).

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  9. The purpose of tanning in leather industry is to

    10. A.
    stiffen the leather.
    B.
    smoothen the leather.
    C.
    make it flexible.
    D.
    impart water resistance.

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  10. Lime and soda ash are added to water to remove

    11. A.
    bicarbonates & sulphates of calcium and magnesium.
    B.
    undersirable taste and odour.
    C.
    bacteria.
    D.
    its corrosiveness.

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