Surface water may contain large amount of impurities be contaminated by impuriti

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all the above.

Water Supply Engineering problems

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1. In a rapid gravity filter
Options
A. raw water from the source is supplied
B. disinfected raw water is supplied
C. raw water passed through coagulation tank is supplied
D. none of these.

3. Estimates of a water supply project depends upon the rate of water supply per capita consumption and probable population estimated at the end of the design period of
Options
A. 5 to 10 years
B. 10 to 15 years
C. 15 to 20 years
D. 20 to 30 years
E. 25 years.

5. If P is population of a city in thousands and Q is fire demand in litres per minute, for proper estimate of water, the Empirical formula is suggested by
Options
A. National Board of fire under-writers
B. Freeman
C. Kuichling
D. None of these.

9. Pick up the correct statement from the following :
Options
A. If ports are closed, the dry intake towers will not have any water
B. Even if ports are closed, the wet intake tower will have water filled up to reservoir level
C. The dry intake towers are generally constructed with heavier construction to resist buoyant forces
D. No buoyant force acts on wet intake towers
E. All the above.

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