The maximum permissible limit for flouride in drinking water is______________?
A. 0.1 mg/litre
B. 1.5 mg/litre
C. 5 mg/litre
D. 10 mg/litre
Related Questions on Environmental Engineering Mcqs
The distribution mains are designed for________________?
A. maximum daily demand
B. maximum hourly demand
C. average daily demand
D. maximum hourly demand on maxi¬mum day
The depression of water table in a well due to pumping will be maximum_______________?
A. at a distance R from the well
B. close to the well
C. at a distance R/2 from the well
D. none of the above
The type of valve, which is provided on the suction pipe in a tube-well, is____________?
A. air relief valve
B. reflux valve
C. pressure relief valve
D. sluice valve
As compared to shallow-wells, deep wells have______________?
A. more depth
B. less depth
C. more discharge
D. less discharge