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  • Question

  • In areas where rainy season is limited to a few months, the type of sewerage system recommended is


  • Options
  • A. combined system
  • B. partially separate system
  • C. separate system
  • D. none of these.

  • Correct Answer
  • separate system 

    • Waste Water Engineering problems

    Search Results

    • 1. The value of Chezy's constant

      is used in

    • Options
    • A. Chezy's formula
    • B. Bazin's formula
    • C. Kutter's
    • D. Manning's formula.
      • Discuss
    • 2. The discharge per unit plan area of a sedimentation tank, is generally called

    • Options
    • A. over flow rate
    • B. surface loading
    • C. over flow velocity
    • D. all the above.
      • Discuss
    • 3. The sewerage system consists of

    • Options
    • A. house sewer
    • B. lateral sewer
    • C. branch sewer
    • D. main sewer
    • E. all of these.
      • Discuss
    • 4. The suitable cross-section of sewers to carry combined flow, is

    • Options
    • A. circular
    • B. egg shaped
    • C. rectangular
    • D. horse shoe shaped.
      • Discuss
    • 5. Drop manholes are the manholes

    • Options
    • A. without entry ladders
    • B. without manhole covers
    • C. with depths more than 3.5 m
    • D. having drains at different levels.
      • Discuss
    • 6. Pick up the correct statement from the following :

    • Options
    • A. anaerobic bacteria flourish in the absence of oxygen
    • B. aerobic bacteria flourish in the presence of oxygen
    • C. facultative bacteria flourish with or without oxygen
    • D. all the above.
      • Discuss
    • 7. The sewers

    • Options
    • A. must be of adequate size to avoid over flow
    • B. must flow under gravity to full
    • C. must be laid at least 2 to 3 m deep to collect /water from the basements
    • D. all the above.
      • Discuss
    • 8. For detecting the nitrites in the sewage, the matching colour may be developed by adding

    • Options
    • A. Pottassium permanganate
    • B. Sulphuric acid and napthamine
    • C. Phenol-di-sulphuric acid pottassium hydroxide
    • D. None of these.
      • Discuss
    • 9. Aerobic activity is maximum

    • Options
    • A. in freshly produced sewage
    • B. at sewer pipes
    • C. in sewer treatment plants
    • D. none of these.
      • Discuss
    • 10. Hazin's formula is used for the settlement velocity of the particles of diameter

    • Options
    • A. less than 0.01 mm
    • B. less than 0.05 mm
    • C. less than 0.1 mm
    • D. greater than 0.1 mm.
      • Discuss

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