JAMB - Biology (1984 - No. 44)
If a handful of soil is shaken with water and left to settle, the soil particles will settle from light to heavy particles as follows
humus, clay, silt, sand, stones
humus, silt, clay, sand, stones
humus, clay,silt, stones, sand
humus, sand, silt, clay, stones
clay, humus, silt, sand, stones