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Pharmaceutical Suspensions Quiz

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Questions and Answers

What is the definition of a pharmaceutical suspension?

A coarse dispersion with soluble solid non-uniformly dispersed in an external phase

A fine dispersion with soluble solid uniformly dispersed in an external phase

A coarse dispersion with insoluble solid uniformly dispersed in an external phase (correct)

A solution with soluble solid dispersed uniformly in an external phase

What is the classification of a suspension based on?

Route of administration and electrokinetic properties (correct)

Type of suspending agent and pH of the external phase

Solubility of the internal phase and viscosity of the external phase

Particle size and density of the external phase

What type of materials are required to be present in finely divided form in the G.I.T?

Materials with high solubility like sodium chloride and potassium nitrate

Materials with low surface area like carbonates and oxides

Materials with high surface area like magnesium trisilicate and kaolin (correct)

Materials with low reactivity like cellulose and starch

What are pharmaceutical suspensions designed for in topical applications?

To leave a light deposit of the active agent on the skin after quick evaporation of dispersion medium Signup and view all the answers

What is the proportion of particle size in a colloidal suspension?

>1 um but <0.1 um Signup and view all the answers

What is the proportion of solid particles in a coarse suspension?

2-10% solids Signup and view all the answers

How are pharmaceutical suspensions classified based on electrokinetic properties?

Flocculated and deflocculated Signup and view all the answers

What is the size range of particles in a nanosuspension?

Below 1 micron Signup and view all the answers

What is the external phase (suspending medium) generally composed of in pharmaceutical suspensions?

Aqueous Signup and view all the answers

What are pharmaceutical suspensions designed to leave on the skin after topical application?

A light deposit of the active agent Signup and view all the answers