PDF chapter test TRY NOW

Fill up the blanks:
 
a. The method of separating seeds of paddy from its stalks is called 
.

b. When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. This process of separating cream from milk is an example of
.
 
Answer variants:
filtration
threshing
evaporation
decantation