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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. Presence of sodium tripolyphosphate (an additive) in synthetic detergent

    2. A.
    facilitates its use even in hard water (by sequestering the water-hardening Ca & Mg ions).
    B.
    inhibits its corrosive effects.
    C.
    does not allow redeposition of dirt on the cleaned surface.
    D.
    none of these.

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  2. Dense soda ash used in the manufacture of glass, is chemically represented by

    3. A.
    Na2CO3
    B.
    Na2CO3.10H2O
    C.
    Na2CO3.H2O
    D.
    Na2HCO3

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  3. Reverse osmosis is normally used for the

    4. A.
    separation of isotopes of uranium from gaseous uranium hexaflouride.
    B.
    separation of helium from natural gas.
    C.
    desalination of brackish water to produce potable (drinking) water.
    D.
    purification of oxygen.

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  4. Hydrazine is largely used

    5. A.
    as a starting material for 'hypo'.
    B.
    in photographic industry.
    C.
    as rocket fuel.
    D.
    in printing industry.

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  5. 'Synthesis gas' meant for the synthesis of organic compound is a variable mixture of

    6. A.
    N2 & H2
    B.
    CO2 & H2
    C.
    CO & H2
    D.
    C & H2

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  6. Litharge is

    7. A.
    lead oxide
    B.
    zinc oxide
    C.
    zinc sulphide
    D.
    cellulosic photographic material

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  7. Coagulant is used __________ filtration.

    8. A.
    before
    B.
    after
    C.
    during
    D.
    to avoid

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  8. 10% oleum comprises of 10% free

    9. A.
    SO2
    B.
    H2SO3
    C.
    SO3
    D.
    H2SO4

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  9. Use of chlorine in the treatment of sewage

    10. A.
    helps in grease separation.
    B.
    increases the biological oxygen demand(BOD).
    C.
    causes bulking of activated sludge.
    D.
    aids in flocculation.

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  10. Removal of dirt/soil by soaps or detergent does not involve the __________ of soil.

    11. A.
    emulsification
    B.
    dispersion
    C.
    precipitation
    D.
    wetting

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