Which formulation is described as solid particles dispersed in a liquid?

• A. Emulsion
• B. Solution
• C. Suspension
• D. Dispersion

Answer: (C)

Solid particles dispersed in a liquid form a suspension. In a suspension, the solid does not dissolve; the particles remain as visible chunks floating in the liquid and will settle to the bottom if left undisturbed. You can usually re-disperse them by stirring or shaking. This is different from a solution, where the substance dissolves at the molecular level and the mixture appears uniform and clear. It’s also distinct from an emulsion, which is droplets of one liquid dispersed in another liquid, not solid particles. A dispersion is a broader word that can include suspensions and colloids, but when you have solid particles in a liquid, the correct term is suspension.