A. Slow sand filters can remove colour completely
B. Activated carbon can be used for taste & odour control without subsequent filtration
C. Application of activated carbon reduces the temporary hardness of water
D. Normally, the turbidity is removed by adding a coagulant prior to sedimentation
Correct Answer: Normally, the turbidity is removed by adding a coagulant prior to sedimentation ✔
Last Updated: February 14, 2019