engineering recuitment DDA JE Civil 2023 Mock Test Environmental Engineering Quality and Characteristics of Sewage
If initial Dissolved Oxygen (DO) and final DO after 5 days incubation at 20° C in 1·0% dilution sample are 5·0 mg/L and 4·0 mg/L respectively, what is 5-day BOD of the same sample in mg/L
1
50
2
100
3
150
4
200