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  • Question
  • Alum is chemically


  • Options
  • A. Copper sulphate
  • B. Aluminium sulphate
  • C. Ferrous sulphate
  • D. Ferric sulphate.

  • Correct Answer
  • Aluminium sulphate 


  • Water Supply Engineering problems


    Search Results


    • 1. Steel pipe are

    • Options
    • A. suitable for withstanding high internal pressure
    • B. connected by riveted or welded joints
    • C. generally laid under ground and no expansion joint is required
    • D. likely to last 100 years under ordinary conditions
    • E. None of these.
    • Discuss
    • 2. If the average daily demand of a city of 50, 000 population, is 20 m.l.d., the maximum daily demand is

    • Options
    • A. 24 mld
    • B. 30 mld
    • C. 36 mld
    • D. 54 mld.
    • Discuss
    • 3. A strainer type well sunk through three pervious layers intervened by three impervious aquicludes, draws water from

    • Options
    • A. top most pervious layer
    • B. central pervious layer
    • C. lowest pervious layer
    • D. all the pervious layers.
    • Discuss
    • 4. Water to the consumers may be supplied from

    • Options
    • A. infiltration galleries connected to sump well
    • B. infiltration well dug out on the banks of rivers
    • C. ranney wells sunk to the water level
    • D. all the above.
    • Discuss
    • 5. Perched acquifers are generally found

    • Options
    • A. on the surface of the ground
    • B. below the surface of the ground but above water table
    • C. below the water table
    • D. all the above.
    • Discuss
    • 6. The chlorine supply cylinders are generally kept at 38°C to 40°C to prevent

    • Options
    • A. conversion into crystals
    • B. it from burning
    • C. it from explosion
    • D. none of these.
    • Discuss
    • 7. The ratio of discharge and plan area of a continuous flow type settling tank, is known

    • Options
    • A. surface loading
    • B. overflow
    • C. overflow rate
    • D. all the above.
    • Discuss
    • 8. Yield of a drainage basin is :

    • Options
    • A. run off of the area expressed as instantaneous rate
    • B. average run off over a short period
    • C. total volume of water flowing annually
    • D. all the above.
    • Discuss
    • 9. The nitrate concentration in domestic water supplies, is generally limited to

    • Options
    • A. 10 ppm
    • B. 15 ppm
    • C. 25 ppm
    • D. 30 ppm
    • E. 45 ppm.
    • Discuss
    • 10. Aqueducts are generally designed

    • Options
    • A. circular
    • B. rectangular
    • C. horse shoe section
    • D. all the above.
    • Discuss


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