Paper chromatography, a simple laboratory technique often used to separate the different pigments in ink, works based on what general principle?

Explanation

Paper chromatography separates the different components of a mixture, such as the various pigments blended together in ink, based on how differently each component moves through a strip of paper as a solvent, like water or alcohol, travels upward through it by capillary action. Components that are more strongly attracted to the paper move more slowly, while those more soluble in the solvent move faster, gradually separating into distinct visible bands or spots along the paper. This straightforward and inexpensive technique is commonly used in educational settings to visually demonstrate how seemingly single-colored substances can actually be mixtures of multiple different pigments. Explore more Everyday Science MCQs on mcqstutor to keep practicing.