Question

A mixture of powdered salt and sugar can be separated by the process of winnowing.
A.True
B.False

Answer 1

Hint: Winnowing is a process of separating lighter and heavier components of a mixture by wind or by blowing air. Husk and dirt particles can be separated by this method. It is a very crucial process in the cultivation of paddy and helps to separate the quality grains from the chaff.

Complete step by step answer:
The mixture of sugar and salt solution can be separated by evaporation (the process of turning from a liquid into vapor) and if the water is completely evaporated we will get separated sugar from the mixture whereas if we dissolve the solution in alcohol, we get salt while sugar will be dissolved in alcohol. We can’t separate the mixture of powdered salt and sugar by the winnowing method because it separates heavier and lighter components of a mixture while it becomes a homogeneous solution ( composition is uniform throughout the mixture).
Hence, the statement is false
It is a method used by farmers to separate lighter husk particles from heavier seeds of grain. It is an agricultural method developed by ancient cultures and used to separate the grain from the chaff and also used to remove weevils or other pests from stored grain. It usually follows threshing in grain preparation. It is the simplest form that involves throwing the mixture into the air. Then the wind blows away the lighter chaff while the heavier grains fall for recovery from a height by using shovels and a sieve. It is also known as the ‘wind- grading’ method.

Note:
Winnowing is an important separation process to separate grains from the chaff and it is also necessary because chaff is a waste material that doesn’t provide us with any energy. Humans can not able to digest the chaff but it can be a food for livestock.