Name the different types of Chromatography and explain the principles underlying them.

Depending on the nature of the stationary phase i.e., whether it is a solid or a liquid, chromatography is classified into adsorption chromatography and partition chromatography.

i. Adsorption chromatography : 

This technique is based on the principle of differential adsorption. Different solutes are adsorbed on an adsorbent to different extent.

Adsorption chromatography is further classified into two types :

1. Column chromatography 

2. Thin-layer chromatography

ii. Partition chromatography : 

This technique is based on continuous differential partitioning of components of a mixture between stationary and mobile phases. 

For example,

Paper chromatography.