Question

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 ___________.​

(c) Salt is obtained from seawater by the process of ___________.​

(d) Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called ___________.​

Answer 1

(a) The method of separating seeds of paddy from its stalks is called threshing.​

(b) When milk, cooled after boiling, is poured onto a piece of cloth the cream (malai) is left behind on it. The process of separating cream from milk is an example of filtration.​

(c) Salt is obtained from seawater by the process of evaporation.​

(d) Impurities settled at the bottom when muddy water was kept overnight in a bucket. The clear water was then poured off from the top. The process of separation used in this example is called sedimentation and decantation.​