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  • Question
  • If pH value of water is


  • Options
  • A. 7 water it is said to be neutral
  • B. less than 7 it is said to be acidic
  • C. more than 7 it is said to be alkaline
  • D. all the above.

  • Correct Answer
  • all the above. 


  • Water Supply Engineering problems


    Search Results


    • 1. The yield of a rapid gravity filter as compared to that of slow sand filter, is

    • Options
    • A. 10 times
    • B. 15 times
    • C. 20 times
    • D. 30 times
    • E. 35 times.
    • Discuss
    • 2. Water supply includes

    • Options
    • A. collection, transportation and treatment of water
    • B. distribution of water to consumers
    • C. provision of hydrants for fire fighting
    • D. mains, sub-mains and branch lines of water supply
    • E. all the above.
    • Discuss
    • 3. The expected discharge to be obtained from an open well sunk in coarse sand is 0.0059 cumec. If the working depression head of the well is 3 m, the minimum diameter of the well, is

    • Options
    • A. 2 m
    • B. 2.25 m
    • C. 2.50 m
    • D. 2.75 m
    • E. 3.00 m.
    • Discuss
    • 4. Pick up the correct statement from the following :

    • Options
    • A. Perched aquifer is found in unconfined aquifer
    • B. The top surface of the water held in the perched aquifer, is known as perched water table
    • C. Perched aquifer is formed in unfined accquifer if an impervious layer exists
    • D. All the above.
    • Discuss
    • 5. If the viscosity of ground water is 1.00, the Slitcher's constant is 400, the effective size of soil particles in acquifer is 0.5 mm and hydraulic gradient is 1 in 80, the velocity of flow is

    • Options
    • A. 0.25 m/day
    • B. 0.50 m/day
    • C. 0.75 m/day
    • D. 1.00 m/day
    • E. 1.25 m/day.
    • Discuss
    • 6. For determining the velocity of flow of underground water, the most commonly used non-empirical formula is

    • Options
    • A. Darcy's formula
    • B. Slichter's formula
    • C. Hazen's formula
    • D. Lacy's formula.
    • Discuss
    • 7. The maximum depth of sedimentation tanks is limited to

    • Options
    • A. 2 m
    • B. 3 m
    • C. 4 m
    • D. 5 m
    • E. 6 m.
    • Discuss
    • 8. According to IS : 1172-1963, a minimum of 135 litres of water capita per day, is required for

    • Options
    • A. Boarding schools
    • B. Nurses home and medical quarters
    • C. hostels
    • D. all the above.
    • Discuss
    • 9. A high velocity of wash water is required for

    • Options
    • A. rapid gravity filter with strainers
    • B. rapid gravity filter without strainers
    • C. slow sand filter with strainers
    • D. slow sand filter without strainers
    • E. none of these.
    • Discuss
    • 10. Aeration of water is done to remove

    • Options
    • A. odour
    • B. colour
    • C. bacterias
    • D. hardness
    • E. turbidity.
    • Discuss


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