1. Match List I with List II and select the correct answer.
List I (Terms/Description): List II (Treatment operation/process):
1. Settling in primary sedimentation tank, a. Sludge volume index,
2. Settling in secondary sedimentation tank, b. Thickening of sludge,
3. Filtration in trickling filter, c. Scum removal,
4. Activated sludge process d. Recycling of effluent
Wastewater Treatment
J.E Civil 2023
Correct Answer : D
Explanation :
Correct matching: Settling in primary → (1), Thickening of sludge → (2), Scum removal → (a), Recycling effluent → (4). Correct code is a-4, b-2, c-1, d-3.
Correct Answered :
Wrong Answered :