Pick up the incorrect statement from the following ?
For sewers, inverted siphon is provided for___________________?
Which one of the following gases is most significant as air pollutant ?
A cylindrical ejector having its height 2 m fills after every 10 minutes with a peak sewage discharge of 0.0157 cumec. The diameter of the ejector chamber, is_____________________?
Depletion of ozone layer in the outer atmosphere may cause___________________ ?
The quantity of liquid waste which flows in sewers during the period of rainfall, is known__________________?
A five day B.O.D. at 15°C of the sewage of a town is 100 kg/day. If the 5 day B.O.D. per head at 15°C for standard sewage is 0.1 kg/day, the population equivalent is____________________?
The spacing of man holes along a straight portion of a sewer is 300 m, the diameter of the sewer may be__________________?
Design period of 40 to 50 years is adopted for_________________?
The disintegrating pump in which solid matter is broken up before passing out, is__________________?
