Question

mention the following method for the separation of sand dal and husk​

Answer 1

Answer:

here is ur answer.

Explanation:

Handpicking, windowing, sieving.

But handpicking would be better for the separation of sand dal and husk.

I hope it will help u

Answer 2

Handpicking

Have you ever seen your mother picking out impurities by hand from rice grains? These separation techniques in which substances in a mixture can be separated by just picking them out by hand is called Handpicking. This method can be used to separate slightly larger pieces of dirt, stones and husk from the grains because the quantity of such impurities is usually not very large.

Threshing

Suppose in a bowl, there are two kinds of fruits. Then you can easily separate one from the other. But what if the size of the components in a mixture is much smaller. The separation techniques of threshing are useful for such smaller components.

A farmer uses the method of threshing to separate grain from the stalks. The stalks are beaten to separate the grain seeds. Bullocks or machines may be useful for threshing

Winnowing

Winnowing is used to separate lighter components of the mixture from heavier components by the wind. These separation techniques are commonly used by farmers to separate lighter husk particles from the heavier seeds.The lighter particles are carried away by the wind. The heavier seeds form a heap near the platform of winnowing. We can use either natural wind or blow air while winnowing

Sieving

You might have seen your mother use a sieve to separate impurities and bran from flour before using it. The separation techniques of sieving are mainly used in a flour mill to separate impurities from wheat before grinding it. Sieving removes impurities like stones, stalk, and husk that still remain after threshing and winnowing. The sieve only removes particles of impurities that are larger than the pores in the sieve. Therefore, we can design the sieve according to our need.

Sedimentation, Decantation, and Filtration

The heavier impurities present in water settle down at the bottom of the container after some time. These separation techniques are Sedimentation. The impurities only settle because they are heavy. These separation techniques are not useful for lighter impurities.

Decantation is the slow removal of water to separate the impurities from the water after sedimentation. Filtration is the separation of particles of impurities from water using a filter paper.