Question

give five important techniques to separate substances​

Answer 1

Question :-

give five important techniques to separate substances

Answer :-

1. Hand Picking

This method involves simply picking out all the unwanted substances by hand and separating them from useful ones.

2. Threshing

This method is mostly done during the harvesting of crops. Normally, the stalks of the wheat are dried once it is harvested.

3. Winnowing

When the grains are collected from the process of threshing, it needs to be cleared out of husks and chaff before it is turned into flour.

4. Sieving

It is done to separate mixtures that contain substances mostly of different sizes. The mixture is passed through the pores of the sieve.

5. Evaporation

Evaporation is a technique that is used in separating a mixture usually a solution of a solvent and a soluble solid. In this method, the solution is heated until the organic solvent evaporates where it turns into a gas and mostly leaves behind the solid residue.

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