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(Decantation, evaporation, filtration, sieving and using magnet ) are observed. Techniques in separating Mixtures Examples of activities done at home or in the community. 1. Decantation 2. Evaporation 3. Filtration 4.Sieving 5. Using magnet​

Decantation Evaporation Filtration Sieving And Using Magnet Are Observed Techniques In Separating Mixtures Examples Of Activities Done At Home Or In The Communi class=

Sagot :

Answer:

Sedimentation, Decantation and Filtration

Sometimes, it may not be possible to separate components of a mixture by winnowing and handpicking. For example, there may be lighter impurities like dust or soil particles in rice or pulses. How are such impurities separated from rice or pulses before cooking?

Rice or pulses are usually washed before cooking. When you add water to these, the impurities like dust and soil particles get separated. These impurities go into water, which becomes a little muddy. Now, what will sink to the bottom of the vessel — rice or dust? Why? Have you seen that the vessel is tilted to pour out the dirty water?

When the heavier component in a mixture settles after water is added to it, the process is called sedimentation. When the water (along with the dust) is removed, the process is called decantation. (Fig.1)