Chromatography is commonly used for the separation of what?

• A. Organic compounds
• B. Inorganic salts
• C. Plant pigments
• D. Carbohydrates

Answer: (C)

Chromatography is a powerful technique widely utilized for the separation of mixtures based on the differential affinities of compounds towards a stationary phase and a mobile phase. One of its most common applications is in the separation of plant pigments.

Plant pigments, such as chlorophyll, carotenoids, and anthocyanins, often exist in complex mixtures within plant tissues. Chromatography enables researchers to effectively separate these pigments, allowing for analysis and identification. The technique takes advantage of the different chemical properties of these pigments, such as their polarity and solubility, resulting in distinct movement rates across the chromatographic medium.

While chromatography can indeed be applied to organic compounds, inorganic salts, and carbohydrates, its iconic association with plant pigment separation stems from its effectiveness in visualizing and analyzing the variety and concentration of pigments in a sample, particularly in studies related to photosynthesis and plant biology.