If 2% solution of a sewage sample is incubated for 5 days at 20°C and depletion of oxygen was found to be 5 ppm, B.O.D. of the sewage is« Back to Previous Page

A. 200 ppm B. 225 ppm C. 250 ppm D. None of these.
Posted by Civil Engineer
Asked on August 16, 2016 1:21 pm
▲
0
▼

C. 250 ppm

Posted by Civil Engineer
Answered on August 16, 2016 1:21 pm