The following statements (S1 and S2) pertain to the Filtration process for water treatment.
S1: In most types of filtration, particles are removed mainly by straining.
S2: Slow sand filters have more operating problems and require frequent back washing when compared to rapid sand filters.
Check the validity of the statements as True or False and choose the best answer.
1
Both S1 and S2 are False
2
Both S1 and S2 are True
3
S1 is True and S2 is False
4
S1 is False and S2 is True.