1. Define winnowing. What is the principle in using winnowing as a method of separation?
Answers
Winnowing is the method of separting of a mixture contaning heavier and lighter component by wind is by winnowing air.
Wind winnowing is an agricultural method developed by ancient cultures for separating grain from chaff. It is also used to remove hay and chaff or other pests from stored grain.
Threshing, the loosening of grain or seeds from the husks and straw is the step in the chaff-removal process that comes before winnowing.
ANSWER :
Winnowing is the kind of method in which the substance which is light is separated from heavy substances. For example - The grains are separated by performing winnowing from hay and husk.
Principle -
This technique is performed using wind or air. The light particles gets blown away and thus gets separated from the heavy substances. This is the principle that is used in the process of winnowing.