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 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

Explanation:

(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. This 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 decantation.

Answer 2

Answer:

a. Theshing

b. filtration

c. evaporation

d. sedimentation( because impurities settle down , not decantation.)

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