engineering recuitment UPSSSC JE Civil 2024 Mock Test Environmental Engineering Quality and Characteristics of Sewage
If 10 ml of raw sewage has been diluted to 1000 ml and 3 mg/l of dissolved oxygen is consumed of the diluted sample after 5-day incubation at 20° C. Calculate the BOD of raw sewage in mg/l.
1
30
2
500
3
50
4
300