Among the standard chromatographic techniques discussed (Column chromatography, Thin layer chromatog — Qualitative and Quantitative Analysis Chemistry Question

💡 Solution & Explanation

Column chromatography and Thin Layer Chromatography (TLC) primarily depend on the differential adsorption of solutes onto a solid stationary phase (like alumina or silica gel). Paper chromatography, however, relies primarily on the continuous partition of components between a stationary liquid phase (water trapped in cellulose) and a mobile liquid phase. Therefore, exactly 2 of these are adsorption-based.