Pharmacy Technician Certification Board Practice Exam Practice Question

Correct Answer: C

Rationale: A formulation in which the drug does not completely dissolve in the diluent is known as a suspension. In a suspension, solid particles are dispersed in a liquid but remain undissolved, requiring shaking before use.

Elixirs (A) are clear solutions containing alcohol and water, where the drug is fully dissolved. Solutions (B) consist of solutes completely dissolved in a solvent, ensuring homogeneity. Syrups (D) are concentrated solutions of sugar in water, often containing dissolved medications, which means the drug is fully integrated. Thus, only suspensions maintain undissolved particles in the formulation.