Average annual rainfall at any station is the average of annual rainfall over a period of
A. 14 years
B. 21 years
C. 28 years
D. 35 years
Answer: Option D
Related Questions on Water Supply Engineering
The fire demand of a city may be worked out by
A. Kuichling’s formula
B. Freeman formula
C. Bustan’s formula
D. All the above
Mathamoglobinemia or blue baby disease is caused due to
A. Chlorides
B. Nitrites
C. Nitrates
D. Sulphides
Acidity in water is caused due to
A. Mineral acids
B. Free CO2
C. Aluminium sulphate
D. All the above
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