What is the principle of the paper chromatography ?a.Partitionb.Adsorptionc.A and Bd.None of the above

The principle of paper chromatography is both A and B, meaning it involves both Partition and Adsorption.

In paper chromatography, the sample mixture is applied onto a piece of filter paper. The edge of the paper is then dipped into a suitable solvent, and capillary action draws the solvent up the paper. As the solvent rises through the paper, it meets the sample mixture, which starts to travel up the paper with the solvent.

This is where both adsorption and partition come into play. Adsorption is the adhesion of atoms, ions, or molecules from a gas, liquid, or dissolved solid to a surface. In this case, different components of the sample mixture will adhere to the paper to different degrees.

Partitioning is the process where components are partitioned, or divided, between the mobile phase (the solvent) and the stationary phase (the paper). Different components will spend more or less time in each phase depending on their chemical properties, and this will affect how far they travel with the solvent.

So, the correct answer is C. A and B.