What do you understand by :
1) Winnowing
2) Hand picking
3) Sieving
If any one will give correct answer I will mark him / her as brainlist
Answers
1) Handpicking : The method in which substances in a mixture can be separated by just picking them out with the help of hand from the mixture is known as handpicking method.
2) Winnowing : Winnowing is an agricultural method developed by ancient cultures for separating grain from chaff.
3) Sieving : The method of separation of particles from a mixture based on difference in size of particles is known as sieving.
Answer
WINNOWING:It is the process of separating the chaff from the grains by letting an air current pass through it.This method can be used for separating the chaff from the rice grains.
HAND PICKING:It is the method of manually picking the unwanted particles from a given mixture, for example hand picking is to be used when we want to separate stones and insects from rice.
SIEVING: A simple method of separation of a mixture with different size particles,for example flour from crystal sugar.
hope this helps...