Question

Name the process used to separate heavier and lighter components of a mixture.

Answer 1

Hint: The process used to separate heavier and lighter particles is commonly seen while separation of lighter grain in rice and wheat. Heaps of them are to be made fall vertically.

Complete step by step answer:
-Winnowing is a process that is used to separate the heavier and lighter components.
-Winnowing is a method which is used for separation of heavier components to the lighter components in a mixture using the help of wind. The method of winnowing is applied after threshing and it is used mainly for separating grains and other lighter material.
-The Major advantage of winnowing is that it does not require any mechanical instruments or hard tools for its functioning or processing. It just makes use of human labor and is definitely very cheap to use. It consumes very less time. In Winnowing heaps of grains or any other food material is vertically fallen on a windy day. The lighter particles such as grain are blown away by wind and pure food materials form heap on the ground. Threshing refers to the separation of grains from the chaff. Threshing is done after harvesting of the crop to get the edible part from the crop and then after threshing and winnowing is done to remove the contaminated particles.

Note:
The Major disadvantage of weaving is that it cannot separate the particles which are heavier than grains such as pebbles and stones. The other processes used in the separation are hand picking method or sieving methods. The above two methods can be used for separating heavier particles where weaving fails.