Question

why do we need to separate substance?

Answer 1

Every substance is not pure in nature but mixture that's pure are more helpful

Answer 2

$\small{\underline{\underline{\mathbf{Need\:For\:Sepration\:!!}}}}$

Most subatances present in nature contain two or more components may need to seprate these components for various reasons, Such as :-

• To remove any harmful or unwanted component. For example :- small Pieces of stones and undesirable seed grains are remobed from rice and Dals before Cooking.
• Pure Substances are needed in medicined, research, industry, amd also in daily use.
• In Some Mixtures, We have several useful components. By separating each of these components we can make their proper use. For example :- Petrol, Diesel, Kerosene etc.