Pharmacy Curriculum Outcomes Assessment (PCOA) Practice Exam

Levigation is a process that involves moistening a powdered chemical before mixing it into a cream or ointment. A is incorrect because diluting a substance to a safe concentration is known as dilution, not levigation. C is incorrect because distillation is a process that involves separating and purifying liquids. D is incorrect because freezing a substance does not involve moistening or mixing it with other substances. B is the only option that accurately describes the process of levigation.