Pharmaceutics II Course Details
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Questions and Answers

What is the course code for Pharmaceutics II?

  • PHPC 5123
  • PHPC 2113
  • PHPC 4123 (correct)
  • PHPC 6123

    • In which field of study is the course Pharmaceutics II likely to be found?

  • Chemistry
  • Biology
  • Engineering
  • Pharmaceutics (correct)

    • What is the likely level of study for a course with the code PHPC 4123?

  • Second-year undergraduate
  • First-year undergraduate
  • Fourth-year undergraduate
  • Third-year undergraduate (correct)

    • What is the title of the course with the code PHPC 4123?

    <p>Pharmaceutics II</p> Signup and view all the answers

    What is the likely focus of the course Pharmaceutics II?

    <p>Advanced principles of pharmaceutics</p> Signup and view all the answers

    What is the characteristic of a deflocculated suspension?

    <p>Particles settle slowly and are easily redispersed by agitation.</p> Signup and view all the answers

    What type of agent is bentonite?

    <p>Suspending agent</p> Signup and view all the answers

    What is the difference in sedimentation behavior between flocculated and deflocculated suspensions?

    <p>Flocculated suspensions settle quickly, while deflocculated suspensions settle slowly.</p> Signup and view all the answers

    What is the result of decreasing the interfacial tension in a suspension?

    <p>It allows easy penetration of the vehicle into the pores</p> Signup and view all the answers

    How do ionic surfactants bring about flocculation of suspended particles?

    <p>By neutralizing the charge on each particle</p> Signup and view all the answers

    What is the role of electrolytes in a suspension?

    <p>To decrease the electrical barrier between particles</p> Signup and view all the answers

    What is the purpose of a flocculating agent in a suspension?

    <p>To increase the sedimentation rate of particles</p> Signup and view all the answers

    What is the term for the phenomenon where particles settle and form a compact sediment that is difficult to redisperse?

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

    What type of agent is sodium CMC?

    <p>Suspending agent</p> Signup and view all the answers

    What is the ideal suspension system in terms of flocculation?

    <p>A deflocculated system with high viscosity to prevent sedimentation</p> Signup and view all the answers

    What is the effect of flocculation on the stability of a suspension?

    <p>It increases the stability of the suspension</p> Signup and view all the answers

    What is the role of non-ionic surfactants in a suspension?

    <p>To adsorb onto more than one particle, forming a loose flocculated structure</p> Signup and view all the answers

    What is the primary factor affecting the rate of sedimentation according to Stoke's equation?

    <p>Diameter of the particle</p> Signup and view all the answers

    What is the effect of increasing the viscosity of the dispersion medium on the sedimentation behavior of a suspension?

    <p>It decreases the terminal settling velocity</p> Signup and view all the answers

    Which of the following materials would be easiest to wet with water?

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

    What is the primary mechanism of flocculation?

    <p>Natural tendency of particles towards aggregation</p> Signup and view all the answers

    What is the effect of increased viscosity on sedimentation velocity?

    <p>Decrease in sedimentation velocity</p> Signup and view all the answers

    What is the primary difference between deflocculated and flocculated suspensions?

    <p>State of aggregation of particles</p> Signup and view all the answers

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