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Pharmaceutics II Exam 2 Concepts Practice Test

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____ is a type of liquid preparation containing undissolved or immiscible drug distributed throughout a vehicle.
Correct Answer:
Dispersed system
Explanation:
Dispersed systems refer to liquid preparations in which the drug exists as undissolved particles or droplets distributed throughout a continuous liquid phase. This means the drug is not dissolved but is dispersed within the vehicle, matching the description of an undissolved or immiscible substance spread throughout the liquid. This category encompasses suspensions (solid particles in liquid) and emulsions (immiscible liquids as droplets in another liquid). A solution, by contrast, has the drug fully dissolved with no undissolved material.

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