PCT 202: Properties of Solid Systems - Introduction and Particle Size
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Questions and Answers

What is the advantage of oral solid dosage forms over injectable dosage forms?

  • They offer quicker absorption
  • They require less qualified personnel for administration
  • They provide ease and convenience of administration (correct)
  • They are more cost-effective

    • Which method is not used for particle size determination in solid systems?

  • Sedimentation Analysis
  • X-Ray Diffraction (correct)
  • Laser Diffraction
  • Sieve Analysis

    • Which type of solid dosage form is known for offering microbial stability without the need for preservatives?

  • Tablets (correct)
  • Powders
  • Capsules
  • Granules

    • What is a common type of large dose oral powder dosage form?

    <p>Dusting powder</p> Signup and view all the answers

    Which of the following is NOT a type of solid dosage form discussed in the text?

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

    What is a key reason why powdered drugs are rarely used today?

    <p>They lack microbial stability</p> Signup and view all the answers

    What type of tablets are designed to release their contents gradually over an extended period of time?

    <p>Sustained-release tablets</p> Signup and view all the answers

    Which type of tablets are designed to dissolve quickly in the mouth without the need for water?

    <p>Mouth dissolving tablets</p> Signup and view all the answers

    What is the property of a particle that makes it difficult to assign a meaningful diameter?

    <p>Asymmetric shape</p> Signup and view all the answers

    Which method of determining particle size involves expressing the diameter in terms of weights, volumes, or surface areas?

    <p>Surface area</p> Signup and view all the answers

    Which type of capsules are made from a flexible, gel-like material?

    <p>Soft gelatin capsules</p> Signup and view all the answers

    What is the purpose of enteric-coated tablets?

    <p>To resist disintegration in the stomach and dissolve in the intestines</p> Signup and view all the answers

    Why is it important to have a good knowledge and control of the particle size of a drug in pharmacy?

    <p>To affect the rate of release of the drug from different dosage forms</p> Signup and view all the answers

    How does particle size influence the formulation of tablets and capsules?

    <p>It is crucial for achieving proper flow properties and mixing of granules</p> Signup and view all the answers

    In what way can small particles in a suspension affect its usability?

    <p>Small particles settle rapidly, making re-dispersion challenging</p> Signup and view all the answers

    What is the significance of particle size in mixtures of solids?

    <p>Particle size affects the mixing of solid substances</p> Signup and view all the answers

    What are the two important properties in a polydisperse sample of particles?

    <p>Shape and surface area of individual particles</p> Signup and view all the answers

    How does particle size affect the release of a drug from dosage forms?

    <p>Optimal particle size can regulate the rate of drug release</p> Signup and view all the answers

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