16.The per capita consumption of a locality is affected by i) climatic conditions ii) quality of water iii) distribution pressure The correct answer is

17.The phenolic compounds in public water supply should not be more than

18.If the average daily consumption of a city is 100,000 m3, the maximum daily con�sumption on peak hourly demand will be

19.As compared to shallow-wells, deep wells have

20.As compared to geometrical increase method of forecasting population, arithmetical increase method gives