Methods of Separation in Everyday Life — Chapter Summary

Handpicking is used to remove unwanted

Handpicking is used to remove unwanted particles by hand when they are few in number and can be seen clearly. It works on differences in size, colour,

Threshing is the process of separating

Threshing is the process of separating grains from harvested stalks by beating the stalks. Machines called threshers perform threshing and winnowing t

Winnowing is the separation of heavier

Winnowing is the separation of heavier and lighter components by wind or by blowing air. The lighter husk blows away while the heavier grains fall nea

Sieving separates solid particles of different

Sieving separates solid particles of different sizes using a sieve. Fine particles pass through the holes, while bigger particles remain on the sieve.

Evaporation is the change of liquid

Evaporation is the change of liquid into vapour. It is used to separate a solid dissolved in a liquid, such as obtaining salt from seawater.