Emulsions in Pharmaceutics
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Questions and Answers

What is the definition of an emulsion?

  • At least two immiscible liquid phases, with one dispersed as globules in the other (correct)
  • A mixture of gas bubbles in a liquid
  • A solid phase dispersed in a liquid
  • A single liquid phase with dispersed solid particles
  • How are emulsions stabilized?

  • By the presence of an emulsifying agent (correct)
  • By increasing the droplet size of the dispersed phase
  • By increasing the temperature of the system
  • By reducing the viscosity of the continuous phase
  • What are pharmaceutical emulsions used for?

  • Intravenous administration
  • External use for topical creams and lotions (correct)
  • Oral administration of tablets
  • Intramuscular injections
  • When is a system referred to as an oil-in-water (O/W) emulsion?

    <p>When the aqueous phase constitutes more than 45% of the total weight</p> Signup and view all the answers

    What type of emulsifier is typically used in oil-in-water (O/W) emulsions?

    <p>Hydrophilic emulsifier</p> Signup and view all the answers

    Which term refers to the process of creating an emulsion?

    <p>Emulsification</p> Signup and view all the answers

    What is the term for an emulsion where the oil phase is dispersed in an aqueous continuous phase?

    <p>Oil-in-water (O/W) emulsion</p> Signup and view all the answers

    What is the main function of an emulsifying agent in pharmaceutical emulsions?

    <p>Stabilize the emulsion</p> Signup and view all the answers

    In which type of emulsion does the aqueous phase constitute more than 45% of the total weight?

    <p>Oil-in-water (O/W) emulsion</p> Signup and view all the answers

    What are topical creams and lotions examples of in the context of emulsions?

    <p>Oil-in-water (O/W) emulsions</p> Signup and view all the answers

    What is the term for a system in which the oil phase is dispersed throughout an aqueous continuous phase?

    <p>Oil-in-water (O/W) emulsion</p> Signup and view all the answers

    Which type of emulsifier is typically used in oil-in-water (O/W) emulsions?

    <p>Sodium lauryl sulfate</p> Signup and view all the answers

    What is the term for the process of creating an emulsion?

    <p>Emulsification</p> Signup and view all the answers

    In the context of emulsions, what are topical creams and lotions examples of?

    <p>Oil-in-water (O/W) emulsions</p> Signup and view all the answers

    Which type of emulsion is generally formed when the aqueous phase constitutes more than 45% of the total weight?

    <p>Oil-in-water (O/W) emulsion</p> Signup and view all the answers

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