NAPLEX (North American Pharmacist Licensure Examination) Practice Exam

Disable ads (and more) with a membership for a one time $2.99 payment

Prepare for the NAPLEX with our engaging exam simulation. Our quiz-style format offers multiple-choice questions, hints, and detailed explanations to enhance your learning experience. Get ready to ace your NAPLEX exam!

Each practice test/flash card set has 50 randomly selected questions from a bank of over 500. You'll get a new set of questions each time!

Practice this question and more.

What is the role of an emulsifier (emulgent)?

To grind solids
To increase the viscosity of a liquid
To keep liquid droplets dispersed throughout the liquid vehicle
To sterilize surfaces

The correct answer is: To keep liquid droplets dispersed throughout the liquid vehicle

An emulsifier, also known as an emulgent, is a substance that helps to create and maintain a stable emulsion. An emulsion is a mixture of two or more immiscible liquids, such as oil and water, that are dispersed throughout each other. Therefore, the role of an emulsifier is to keep these liquid droplets dispersed throughout the liquid vehicle, preventing them from separating and maintaining a uniform consistency. Option A is incorrect because the role of an emulsifier is not to grind solids. Option B is incorrect because the role of an emulsifier is not to increase the viscosity of a liquid. Option D is incorrect because the role of an emulsifier is not to sterilize surfaces. These functions are performed by other substances and are not related to emulsifiers.