Raw water treated with only chlorine, is known as
Answer: Option A
Explanation:
The level of underground water is called
Answer: Option B
Per capita demand of water is calculated in litres
P.V.C. pipes can withstand pressure bead of water upto
Answer: Option D
The population of a city in 2000 is 50,000. The average increase in population over last 8 decades is 7500 and average incremental increase during 8 decades is 750. The population of the city based on incremental method, in the year 2020 will be
Answer: Option C
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