Question

What is the principal involved in the process of sedimentation?

Answer 1

The principle that is used is as follows :

The impurities present in the liquid settle down at the bottom slowly because it is heavier.

After some time , the impurities have completely settled down and the supernatant liquid can be collected in another beaker .

Care is taken so that we pour the water very gently such that impurities do not fall in the clear water.

This ensures proper purification of water.

Answer 2

we can purify water by sedimentation .

this process starts by putting alum into water and after few minutes upper layer of water will look transparent means purified.