engineering recuitment UKSSSC Draftsman 2024 Mock Test Series Environmental Engineering Quality and Characteristics of Sewage
The amount of oxygen consumed by the aerobic bacterias which cause the aerobic biological decomposition of sewage, is known as
1
Dissolved Oxygen (D.O.)
2
Biochemical Oxygen Demand (B.O.D)
3
Chemical Oxygen Demand (C.O.D)
4
None of the above