Question

what is difference between (a)threshing and winnowing? (b)sedimentation and decantation? (c)evaporation and condensation?

Answer 1

1) Threshing and winnowing:-

•Threshing:It is the process of separating grain from the stalk.
•Winnowing: It is the process in which unwanted husk is removed from grains.


2) Sedimentation and Decantation:-

•Sedimentation: It is the process of setting down of heavy insoluble impurities.
•Decantation: It is the process of separating mixtures by removing a layer of liquid.


3) Evaporation and Condensation:-

•Evaporation:It is the process in which there is a change in state from liquid or solid to gaseous.
•Condensation:It is the process of change from a vapour to a solid or liquid state.

Answer 2

a)threshing -the process that is done by machines or even by animals by beating the elements. winnowing -the process which is usually done by hand with the help of air.
b)sedimentation -in this process the germs in the water get settled slowly at the bottom. decantation -in this process the germs and water separate from each other.
c)evaporation -the process in which a liquid changes into vapour. condensation -in this process the the water vapour cooled and become a liquid.
hope that this will help you very much