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Civil Engineering :: Waste Water Engineering

  1.  

    The asbestos cement pipes are generally laid

  2. A.
    horizontally
    B.

    vertically

    C.

    at an angle of 30°

    D.

    at an angle of 60°.

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  3. Chlorination of water is done for the removal of

  4. A.

    bacterias

    B.

    suspended solids

    C.

    sediments

    D.

    hardness.

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  5.  

    For evaporation and measurement of settlable solids, the apparatus used, is

  6. A.

    a jar

    B.

    a breaker

    C.

    a test tube

    D.

    an Imhoff cone.

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  7. In SI units the power of sound is represented in

  8. A.

    kgs

    B.

    joules

    C.

    neutons

    D.
    watts.

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  9.  

    A rain sanitary sewer is constructed to carry

  10. A.

    sanitary sewage

    B.
    storm sewage
    C.

    surface water

    D.
    ground water
    E.

    all the above.

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  11.  

    The sewage is pumped up

  12. A.

    from low lying areas

    B.

    from flat areas

    C.

    from basements

    D.

    across a high ridge

    E.

    all the above.

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  13.  

    Removal of oil and grease from sewage, is known

  14. A.

    screening

    B.
    skimming
    C.

    filtration

    D.
    none of these.

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  15.  

    The gas which may cause explosion in sewers, is

  16. A.

    carbondioxide

    B.
    methane
    C.

    ammonia

    D.

    carbon monoxide.

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  17. In sewers the effect of scouring is more on

  18. A.
    top side
    B.

    bottom side

    C.

    horizontal side

    D.

    all sides.

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