A. 1500 m
B. 1505 m
C. 1475 m
D. 1485 m
Related Mcqs:
- Corrosion of well pipes may not be reduced by_________________?
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 - The yield of a rapid gravity filter as compared to that of slow sand filter, is__________________?
A. 10 times
B. 15 times
C. 20 times
D. 30 times
E. 35 times - 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________________?
A. 2 m
B. 2.25 m
C. 2.50 m
D. 2.75 m
E. 3.00 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. - Disinfection of drinking water, is done to remove_________________?
A. odour
B. bacterias
C. turbidity
D. colour - For determining the velocity of flow of underground water, the most commonly used non-empirical formula is________________?
A. Darcy’s formula
B. Slichter’s formula
C. Hazen’s formula
D. Lacy’s formula - Biochemical Oxygen Demand (B.O.D.) of safe drinking water must be________________?
A. nil
B. 5
C. 10
D. 15
E. 20 - 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 - Aeration of water is done to remove______________?
A. odour
B. colour
C. bacterias
D. hardness
E. turbidity - 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______________________?
A. 1880 kilo litres
B. 2880 kilo litres
C. 3880 kilo litres
D. 4880 kilo litres
