engineering recuitment UKPSC Polytechnic Lecturer Mock Test 2024 Environmental Engineering Waste Water
A BOD5 test is conducted on 5 mL of river water in 300 mL of BOD bottle. If the initial and final DO are 8 mg/L and 0 mg/L respectively, then the BOD5 of the wastewater is
1
400 mg/L
2
480 mg/L
3
187.5 mg/L
4
cannot be determined