engineering recuitment FCI JE 2022 Mock Test for CE/ME/EE (Phase I & II) Environmental Engineering Water Treatment Filtration
The effective size of sand particles used in slow sand filters is
1
0.25 to 0.35 mm
2
0.35 to 0.60 mm
3
0.60 to 1.00 mm
4
1.00 to 1.80 mm
5
1.20 to 2.20 mm