Pharmacy Curriculum Outcomes Assessment (PCOA) Practice Exam

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Levigation is the process of:

  1. Diluting a substance to a safe concentration

  2. Moistening a powdered chemical before mixing it into a cream or ointment

  3. Distilling a liquid to increase its purity

  4. Freezing a substance to preserve its chemical structure

The correct answer is: Moistening a powdered chemical before mixing it into a cream or ointment

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.

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