River water contains _____ and fine particles of sand.
Clay and fine sand particles are present in river water as suspended impurities and give the water a muddy and dirty look.
Therefore, river water contains clay and fine particles of sand.
Question 9
In a filtration plant, water is filtered using layers of (a) sand and clay (b) clay and fine gravel (c) sand and fine gravel (d) sand, fine gravel and medium gravel
Small particles of sand in river water are removed by the process of