_______ is based on difference in rates of adsorption of different substances on the surface of a suitable adsorbent.
Chromatography
Chromatography is based on difference in rates of adsorption of different substances on the surface of a suitable adsorbent.
It is basically a process of separating out different parts of chemical mixtures onto an adsorbent material that can then be individually analyzed because different parts are caught on the material at different rates. This process is used in forensic testing.