Civil Engineering > GATE 2026 SET-2 > Water Quality Testing
The 2.4 ml of raw sewage is diluted to 240 ml. The Dissolved Oxygen (DO) of the diluted sample at the beginning of Biochemical Oxygen Demand (BOD) test was 8 mg/l and it was 6 mg/l after 5-day incubation at 20 °C.
The BOD5 (in mg/l) of the raw sewage is
The BOD5 (in mg/l) of the raw sewage is
Correct : a
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