SSC SSC JE Civil 2025 Mock Test Series (Paper 1 & Paper 2) Environmental Engineering Water Treatment
Which of the following statements is INCORRECT?
1
In plain sedimentation tanks, the removal of particles is independent of the depth of the sedimentation tank.
2
Filters purify water through the following four different processes: mechanical straining, flocculation and sedimentation, biological metabolism and electrolyte charges charging.
3
Flocculation is a chemical technique that is directed towards the destabilisation of charged particles and the coagulation promotes the agglomeration of stabilised particles.
4
Activated carbon is a de-chlorinating agent.