A. for storage water
B. to increase the velocity in a pipeline
C. as overflow valves
D. to guard against water hammer
Related Mcqs:
- The maximum depth of sedimentation tanks is limited to________________?
A. 2 m
B. 3 m
C. 4 m
D. 5 m
E. 6 m - The fire demand of a city may be worked out by _________________?
A. Kuichling’s formula
B. Freeman formula
C. Under Writers formula
D. Bustan’s formula
E. All the above. - Time of concentration________________?
A. is the time taken, for precipitation
B. duration of rainfall.
C. time taken for all the ran off to reach the drain
D. time taken for the storm water to travel from the most remote point to the drain - According to IS : 1172-1963, a minimum of 135 litres of water capita per day, is required for________________?
A. Boarding schools
B. Nurses home and medical quarters
C. hostels
D. all the above - The factor affecting per capita demand, is___________________?
A. size of the city
B. climatic conditions
C. pressure in water mains
D. cost of water
E. all the above - Acidity in water is caused due to_______________?
A. Mineral acids
B. Free CO2
C. Iron sulphate
D. Aluminium sulphate
E. All the above - In slow sland filters, the turbidity of raw water can be removed only up to_________________?
A. 60 mg/litre
B. 75 mg/litre
C. 100 gm/litre
D. 150 mg/litre - By boiling water, hardness can be removed if it is due to_________________?
A. calcium sulphate
B. magnesium sulphate
C. calcium nitrate
D. calcium bicarbonate
E. none of these - The least thickness of class B cast iron (spun) pipe, is_________________?
A. 7.2 mm
B. 7.9 mm
C. 8.6 mm
D. 10 mm - As per IS : 1172-1963, water required per head per day for average domestic purposes, is_______________?
A. 50 litres
B. 65 litres
C. 85 litres
D. 105 litres
E. 135 litres
