Filtration is a process of separating solids from liquids using a filter medium or a porous material. Here are the details of the answer:

Filtration
Filtration is a separation process used to separate solid particles from a liquid by passing the mixture through a porous material or filter medium. The filter medium allows the liquid to pass through but retains the solid particles.

Working principle
The solid-liquid mixture is poured into the filter funnel, and the liquid passes through the filter paper, leaving the solid particles behind. The solid particles that are retained on the filter paper are called the residue, while the liquid that passes through the filter paper is called the filtrate.

Types of filtration
There are different types of filtration methods, and they include:

1. Gravity filtration - This is a process in which gravity is used to filter the mixture.

2. Vacuum filtration - This is a process in which a vacuum is used to increase the rate of filtration.

3. Pressure filtration - This is a process in which pressure is used to filter the mixture.

Uses of filtration
Filtration is used in various industries and in our daily lives. Some of its uses include:

1. Separating impurities from water.

2. Separating solids from liquids in the chemical industry.

3. Separating particles from the air in air purifiers.

4. Separating sand and gravel from water.

Conclusion
Filtration is an important process in separating solids from liquids. It is a common process used in various industries and in our daily lives.