Pick up the incorrect statement from the following :
Options
A. Septic tanks are horizontal continuous flow type of sedimentation tanks
B. Septic tanks are generally provided a detention period of 12 to 36 hours
C. Septic tanks are completely covered and high vent shafts are provided for the escape of foul gases
D. Septic tanks are generally classified as tanks which work on the principle of anaerobic decomposition
E. None of these.
Correct Answer
None of these.
More questions
1. At the same mean velocity, the ratio of head loss per unit length for a sewer pipe flowing full to that for the same pipe flowing half full would be :