Which of the following is the most appropriate method to separate an insoluble solid from a liquid solution?

• A. Evaporation
• B. Chromatography
• C. Filtration
• D. Distillation

Answer: (C)

Verified step by step guidance

1. Understand the nature of the mixture: an insoluble solid suspended in a liquid means the solid does not dissolve and remains as separate particles.
2. Recall that evaporation and distillation are methods used to separate components based on differences in boiling points, typically for solutions where the solute is dissolved.
3. Chromatography is a technique used to separate components based on their movement through a medium, often for dissolved substances or mixtures of liquids or gases.
4. Filtration is the process where a mixture is passed through a porous barrier (filter paper) that allows the liquid to pass through but retains the insoluble solid particles.
5. Therefore, the most appropriate method to separate an insoluble solid from a liquid solution is filtration, because it physically separates solid particles from the liquid.