Question

which of these techniques can be used to effectively separate an undissolved solid from a liquid? chromatography settling, then decantation evaporation magnetism

Explanation:

Chromatography separates dissolved components based on different movement rates. Evaporation removes liquid to leave dissolved solid. Magnetism only works for magnetic solids. Settling lets undissolved solid sink, then decantation pours off the liquid, separating the two.

Answer:

settling, then decantation