A. 1500 m
B. 1505 m
C. 1475 m
D. 1485 m
0
![]()
The underground sources of water, is from______________?
0
![]()
According to IS : 1172-1963, a minimum of 135 litres of water capita per day, is required for________________?
Pick up the incorrect statement from the following?
A. wells
B. springs
C. infiltration wells
D. storage reservoirs
E. none of these
0
![]()
The factor affecting per capita demand, is___________________?
A. Boarding schools
B. Nurses home and medical quarters
C. hostels
D. all the above
0
![]()
The specific retention is least in case of_______________?
A. size of the city
B. climatic conditions
C. pressure in water mains
D. cost of water
E. all the above
0
![]()
For determining the velocity of flow of underground water, the most commonly used non-empirical formula is________________?
A. Clay
B. Sand
C. Silt
D. Coarse gravel
0
![]()
The maximum depth of sedimentation tanks is limited to________________?
A. Darcy’s formula
B. Slichter’s formula
C. Hazen’s formula
D. Lacy’s formula
0
![]()
Corrosion of well pipes may not be reduced by_________________?
A. 2 m
B. 3 m
C. 4 m
D. 5 m
E. 6 m
0
![]()
Acidity in water is caused due to_______________?
A. reducing the draw down and the pumping rate
B. reducing the flow velocity
C. using thicker pipes
D. using screens having larger area of openings
E. none of these
0
![]()
In slow sland filters, the turbidity of raw water can be removed only up to_________________?
A. Mineral acids
B. Free CO2
C. Iron sulphate
D. Aluminium sulphate
E. All the above