railway RRB JE (CBT I + CBT II) Mock Test 2024 Soil Mechanics and Foundation Engineering Permeability
The coefficient of permeability of gravel is-
1
Less than 10–6 cm/sec
2
Between 1 and 100 cm/sec
3
Between 1 × 10–6 and 1 × 10–3 cm/sec
4
Between 0.001 and 1 cm/sec