engineering recuitment BPSC Assistant Sanitary & Waste Management Officer Mock Test 2022 Environmental Engineering Sewage
Which of the following are not examples of unit operations?
1. Activated sludge process
2. Screening
3. Sedimentation
4. Grit removal
5. Oxidation pond
6. Anaerobic digester1
1, 5, 6
2
2, 3, 5
3
1, 3, 4
4
2, 3, 4