Water Supply Engineering Questions

• By boiling water, hardness can be removed if it is due to
• If four fires break out in a city of population 40 lakhs and if each hydrant has three streams and duration of each fire is four hours, the total quantity of water required, is
• The specific retention is least in case of
• B.O.D. of treated water should be
• Acidity in water is caused due to
• Disinfection of drinking water, is done to remove
• The factor affecting per capita demand, is
• If V is total consumption of water in litres for a population of N individuals, per capita consumption or water allowance for the water supply Q, is given by
• Pick up the incorrect statement from the following. The underground sources of water, is from
• Pick up the correct statement from the following :
• The R.L. of ground water table on the sides of a valley is 1505 m whereas R.L. of the stream water is 1475 m. If 60° slope consists of pervious soil between R.L. 1485 m to 1500 m, the gravity spring may be expected at the point of reduced level
• In distribution pipes, drain valves are provided at
• Distribution mains of any water supply, is normally designed for its average daily requirement
• Corrosion of well pipes may not be reduced by
• In pressure supply mains, water hammer pressure is reduced by providing
• Manholes along the mains from the source to a city are provided at 500 m intervals in
• Average annual rainfall at any station is the average of annual rainfall over a period of
• Corrosion of a pipe
• The population growth curve is
• The least thickness of class B cast iron (spun) pipe, is