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  • Question

  • Mathamoglobinemia, or blue baby disease is caused due to


  • Options
  • A. chlorides
  • B. nitrites
  • C. nitrates
  • D. sulphides.

  • Correct Answer
  • nitrates 

    • Water Supply Engineering problems

    Search Results

    • 1. The water level in an open well was depressed by pumping 2.5 m and recuperated 2.87 m in 3 hours and 50 minutes. The yield of the well per minute is

    • Options
    • A. 0.0033
    • B. 0.0044
    • C. 0.0055
    • D. 0.0066
      • Discuss
    • 2. E. Coli bacterias die in water having pH greater than

    • Options
    • A. 5.5
    • B. 6.5
    • C. 7.5
    • D. 8.5
    • E. 9.5
      • Discuss
    • 3. The best process of disinfection of public water supply, is by

    • Options
    • A. boiling
    • B. chlorination
    • C. adding lime
    • D. adding zone.
      • Discuss
    • 4. A pressure conduit laid under ground, may not be subjected to

    • Options
    • A. internal pressure of water
    • B. pressure due to external load
    • C. longitudinal temperature stress
    • D. longitudinal stresses due to unbalanced pressure to bends
    • E. none of these.
      • Discuss
    • 5. The equation in which Q is yearly run off in cm, P is yearly total rainfall in cm, H is difference of R.L.s. of lowest and highest points and A is area of catchment in square metres, is known as

    • Options
    • A. English formula
    • B. Khosla's formula
    • C. Justin's formula
    • D. Vermule's formula.
      • Discuss
    • 6. An earth formation which, although porous and capable of absoring water does not provide an appreciable supply to wells, is known as

    • Options
    • A. acquifer
    • B. aquiclude
    • C. aquifuge
    • D. none of these.
      • Discuss
    • 7. Pick up the incorrect statement from the following :

    • Options
    • A. An impervious layer a few metres below the water table in the sub-soil, is generally called Mota layer (6) Mota layer is very useful to give structural support to open deep wells
    • B. A bore hole is generally provided in the mota layer for deep wells
    • C. Shallow wells are always of less depth as compared to deep wells
    • D. None of these.
      • Discuss
    • 8. The force which develops in a pressure conduit supported on trestles, is

    • Options
    • A. tension
    • B. compression
    • C. temperature stress
    • D. flexural stress.
      • Discuss
    • 9. Surface water is obtained from

    • Options
    • A. well
    • B. springs
    • C. artesian well
    • D. rain.
      • Discuss
    • 10. Pick up the correct statement from the following regarding the pressure conduits :

    • Options
    • A. Pressure conduits are permitted to run th full
    • B. Pressure conduits are always laid along down grades
    • C. The hydraulic gradient line always coincides the invert of the conduit
    • D. None of these.
      • Discuss

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