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  • Question

  • The rainfall at any place may be determined by


  • Options
  • A. its intensity
  • B. its direction
  • C. its frequency
  • D. all the above.

  • Correct Answer
  • all the above. 

    • Waste Water Engineering problems

    Search Results

    • 1. If q is the average sewage flow from a city of population P, the maximum sewage flow

    • Options
    • A.
    • B.
    • C.
    • D.
      • Discuss
    • 2. Imhoff cone is used to measure

    • Options
    • A. total organic solids
    • B. total solids
    • C. total in organic solids
    • D. settleable solids.
      • Discuss
    • 3. In circular sewers if depth of flow is 0.2 times the full depth, the nominal gradient,

    • Options
    • A. is only provided
    • B. is doubled
    • C. is trebled
    • D. is not enough.
      • Discuss
    • 4. The factor responsible for purification of sewage in river is

    • Options
    • A. Hydrology
    • B. Dissolved oxygen in water
    • C. Temperature
    • D. Turbulence
    • E. All the above.
      • Discuss
    • 5. For a circular sewer of diameter D running partially full with central angle ?,

    • Options
    • A.
    • B.
    • C.
    • D.
    • E. all the above.
      • Discuss
    • 6. PH value of sludge during alkaline regression stage, is

    • Options
    • A. more than 7
    • B. less than 7
    • C. less than 6
    • D. more than 6.
      • Discuss
    • 7. The average temperature of sewage in India, is

    • Options
    • A. 10°C
    • B. 15°C
    • C. 20°C
    • D. 25°C
    • E. 30°C.
      • Discuss
    • 8. The first stage of neutral process of sludge digestion, is

    • Options
    • A. acid fermentation
    • B. acid regression
    • C. alkaline fermentation
    • D. none of these.
      • Discuss
    • 9. The moisture content of a sludge is reduced from 90% to 80% in a sludge digestion tank. The percentage decrease in the volume of sludge, is

    • Options
    • A. 25%
    • B. 50%
    • C. 10%
    • D. 5%.
      • Discuss
    • 10. The use of coarse screens for the disposal of sewage, may be dispensed with by

    • Options
    • A. comminutor
    • B. shredder
    • C. both (a) and (b)
    • D. neither (a) nor (b).
      • Discuss

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