NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

Disable ads (and more) with a membership for a one time $4.99 payment

Ace your North American Pharmacist Licensure Examination (NAPLEX) with our comprehensive practice test. Features include interactive flashcards, multiple-choice questions, with detailed hints and explanations. Fast-track your pharmacy career today!

Start Multiple Choice Practice Test
Start Flash Cards

Practice this question and more.

What does the wetting agent do in a suspension?

  1. Dissolves the solute

  2. Decreases the density

  3. Increases the viscosity

  4. Helps incorporate an insoluble drug

The correct answer is: Helps incorporate an insoluble drug

A wetting agent, also known as a surfactant, helps to incorporate an insoluble drug into a suspension by reducing the interfacial tension between the two substances. This allows the insoluble particles to more easily spread throughout the liquid and form a uniform suspension. Option A, dissolving the solute, refers to a solute that is able to dissolve in the liquid, which is not the case in a suspension. Option B, decreasing the density, would not necessarily have an effect on the insoluble particles in the suspension. Option C, increasing the viscosity, would make it more difficult for the particles to disperse evenly. Therefore, option D is the most accurate choice in explaining the role of a wetting agent in a suspension.

More Questions Like This