2.
Exercises
1. Why do we need to separate different components of a mixture? Give two
examples.
What is winnowing? Where is it used?
3.
How will you separate husk or dirt particles from a given sample of pulses before
cooking
What is sieving? Where is it used?
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?
Answers
HERE'S THE ANSWER MATE...... ❤️❤️❤️
ANS 1 : Among different components of mixture there are many substances which are harmful or not useful for us. To remove these harmful or unuseful components we need to separate them. For example: Tea leaves are separated from the liquid with a strainer while preparing tea.
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ANS 2 : Winnowing: The process of separating heavier and lighter components of a mixture by wind or by blowing air is called winnowing. This method is used by farmers to separate lighter husk particles from heavier seeds of grain.
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ANS 3 : Husk or dirt particles can be separated by winnowing method. It is used to separate the heavier and lighter components of a mixture by wind or by blowing air.
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ANS 4 : Sieving is a process by which fine particles are separated from bigger particles by using a sieve. It is used in flour mill or at construction sites. In flour mill, impurities like husks and stones are removed from wheat. Pebbles and stones are removed from sand by sieving.
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ANS 5 : It is easy to separate sand and water by filtering the mixture. Salt can be separated from a solution through evaporation. The water can also be recovered as well as the salt if the water vapour is trapped and cooled to condense the water vapour back into a liquid. This process is called distillation.
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ANS 6 : Sugar can be separated from wheat flour by sieving. Flour will pass through the sieve while sugar will be retained on the sieve due to bigger size.
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ANS 7 : We can obtain clear water from a sample of muddy water by the process of filtration. In this method we use a filter paper which is fixed in funnel. Then the mixture is poured on the filter paper. Mud particles being larger in size will remain on the filter paper whereas clear water will pass through it.