engineering recuitment Haryana CET (HSSC) JE Civil 2023 Mock Test Environmental Engineering Water Treatment Filtration

The effective size of sand used in rapid sand filters is:

1

0.45 to 0.70 mm

2

0.71 to 0.90 mm

3

0.21 to 0.44 mm

4

0.12 to 0.20 mm

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