Which of the following is a method for preparing a suspensoids?

• A. Filtration
• B. Distillation
• C. Evaporation
• D. Micro pulverization

Answer: (D)

The key idea is forming suspensoids by creating very fine solid particles that can stay distributed in a liquid. Suspoids are dispersions where the solid particles are in the submicron range—small enough to remain suspended rather than settle quickly, thanks to Brownian motion and proper stabilization. Micro pulverization achieves this by mechanically breaking larger particles into extremely small ones, often in the submicron to micron range, which can then be dispersed to form a stable suspensoids system. The other options don’t do this: filtration removes particles rather than creating them; distillation and evaporation separate components based on volatility, not by reducing particle size to the submicron level needed for suspensoids.