Specific capacity or yield of wells, is generally expressed, as
Disinfection of drinking water, is done to remove
Aeration of water is done to remove
For determining the velocity of flow of underground water, the most commonly used non-empirical formula is
Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be
Surge tanks are used
Pick up the correct statement from the following:
Surcharge storage zone of a reservoir, is
The process of passing water through beds of granular materials, is called
To pump water from a water reservoir 3 m deep and maximum water level at 135 m, a pump is installed to lift water up to R.L. 175 m at a constant rate of 36,00,000 litres per hour. If the length of the pipe is 1506 m and f = 0.01, ignoring other minor losses and assuming the economical diameter from Lea’s formula D = 1.2 √Q, the water horse power of the pump is