Question

List and explain any three methods of separation​

Answer 1

Answer:

1.Sieving 2.Magnetic Separation 3.Evaporation

Explanation:

1. Sieving

We use this method only if the size of the particles in the mixture are different.

It is used to separate grains, seeds, removing water from boiled food, etc.

2. Magnetic Separation

We use this method only if one of the substances in the mixture is attracted to a magnet. (Eg. Iron fillings, Nickel coins)

It is used to separate iron fillings from sand, Nickel coins from bottle caps, magnetic and non magnetic ore, etc.

3. Evaporation

We use this method only if one substances in the mixture can evaporate. (Eg. Water)

We use this to separate Water and Salt solution, Water and Sugar solution, etc.

Answer 2

Answer:

1. Chromatography

Explanation:

Chromatography is a solvent seperation on a solid medium

2.Evaporation : remove a liquid from a solution to leave a solid material

3.filteration : seperate of solid of different size