Question

1. Why do we need to separate different components of a mixture? Give two
examples.
2. What is winnowing? Where is it used?
3. How will you separate husk or dirt particles from a given sample of pulses before
cooking
4. What is sieving? Where is it used?
5. How will you separate sand and water from their mixture?
6.
Is it possible to separate sugar mixed with wheat flour? If yes, how will you do it?
7. How would you obtain clear water from a sample of muddy water?
8. 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 Excellence​

Answer 1

Answer:

Winnowing is used to separate heavier components from the lighter components by blowing air. It is used to separate lighter husk from heavier grains of wheat and rice. ... Husk or dirt particles can be separated from pulses by winnowing. Husk or dirt particles being lighter can be separated from pulses which are heavier.....

Answer 2

We need to separate different components of a mixture to separate the useful components from the non-useful or some harmful components.
Eg.1-tea leaves are separated from tea
2-pebbles are seperated from rice and pulse