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Home ‣ Civil Engineering ‣ Waste Water Engineering See What Others Are Saying!
  • Question

  • A well oxidized sewage contains nitrogen mainly as


  • Options
  • A. nitrates
  • B. nitrites
  • C. free ammonia
  • D. none of these.

  • Correct Answer
  • nitrates 

    • More questions

    • 1. If the coefficient of friction on the road surface is 0.15 and a maximum super-elevation 1 in 15 is provided, the maximum speed of the vehicles on a curve of 100 metre radius, is

    • Options
    • A. 32.44 km/hour
    • B. 42.44 kg/hour
    • C. 52.44 km/hour
    • D. 62.44 km/hour
    • E. 72.44 km/hour
      • Discuss
    • 2. Pick up the correct statement from the following:

    • Options
    • A. In a gully trap, a water seal of 6 to 7.5 cm is provided
    • B. The gully trap collects waste water from the kitchen, sink, wash basins, etc.
    • C. The gully trap disconnects the sullage drain from the main drainage system
    • D. The grating provided over gully traps is 23 cm square.
      • Discuss
    • 3. If D is the degree of a curve, the percentage reduction of gradient, is

    • Options
    • A. 0.01 D
    • B. 0.02 D
    • C. 0.03 D
    • D. 0.04 D
    • E. 0.005 D
      • Discuss
    • 4. Pick up the correct statement from the following :

    • Options
    • A. The maximum rate of storm run off is called peak drainage discharge
    • B. Rational method of estimating peak run off, may be used precisely for areas less than 50 hectares
    • C. The period after which the entire area starts contributing to the run off, is called the time of concentration
    • D. The time required by water to reach the outlet of a catchment from the most remote point, is called time of concentration
    • E. All the above.
      • Discuss
    • 5. The slope correction may be ignored if

    • Options
    • A. the slope of the ground is less than 3°
    • B. to slope of the ground is say 1 in 19
    • C. both (a) and (b)
    • D. neither (a) nor (b)
      • Discuss
    • 6. According to IS : 382-1963, a good aggregate should be

    • Options
    • A. chemically inert
    • B. sufficiently strong
    • C. hard and durable
    • D. all the above.
      • Discuss
    • 7. If T and R are the tread and rise of a stair which carries a load w per square metre on slope, the corresponding load per square metre of the horizontal area, is

    • Options
    • A.
    • B.
    • C.
    • D.
    • E.
      • Discuss
    • 8. You are asked to design and supervise a truss for a factory to have spans 6 m to 9 m. The type of the truss you will use, is

    • Options
    • A. mansored truss
    • B. queen post truss
    • C. king post truss
    • D. collar truss
    • E. none of these.
      • Discuss
    • 9. If N is deviation angle the length L of a parabolic vetical curve for overtaking sight distance S, is

    • Options
    • A.
    • B.
    • C.
    • D.
    • E. Both (A) and (C)
      • Discuss
    • 10. A Second's pendulum gains 2 minutes a day. To make it to keep correct time its length

    • Options
    • A. must be decreased
    • B. must be increased
    • C. is not changed but weight of the bob is increased
    • D. is not changed but weight of the bob is decreased
    • E. none of these.
      • Discuss

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