Explain the principle of paper chromatography.

(N/A) Paper chromatography is a type of partition chromatography.
In this technique,a specialized filter paper acts as the stationary phase,which is primarily composed of cellulose.
The moisture trapped within the cellulose fibers acts as the stationary liquid phase.
The mobile phase,which is a suitable solvent or mixture of solvents,moves through the paper via capillary action.
When a mixture is spotted on the paper,the individual components partition themselves between the stationary phase (water trapped in cellulose) and the moving mobile phase.
Since each component has a different partition coefficient,they migrate at different rates along the paper,leading to their separation.