Question

4 .What is sieving? Where is it used?

5. How will you separate sand and water from their mixture?​

Answer 1

Answer:

(1)Sieving is a method of using a sieve to distinguish small particles from bigger particles. It is used in flour mills or building sites. Impurities such as husks and stones are extracted from wheat at flour mill. They remove pebbles and stones from sand through sieving.

Sieving is most commonly used while cooking to sieve flour, grains, to remove impurities like husk, stone, twigs etc from grains, and to sieve sand and pebbles in construction work etc.

(2)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

Explanation:

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Answer 2

Answer:

4. Sieving is method to put something through a sieve. It is used to seperate the impurities from any powder like thing like flour.

5. Through sedimentation and decantation process, we can easily seperate sand and water.