Pharmaceutical Engineering: Mixing Principles
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Questions and Answers

What type of mixtures are formed from materials that mix spontaneously and irreversibly by diffusion without the input of work/energy?

  • Neutral mixtures
  • Negative mixtures
  • Miscible mixtures
  • Positive mixtures (correct)
  • Which type of mixture requires a higher degree of mixing efficiency due to components tending to separate slowly?

  • Positive mixtures
  • Neutral mixtures
  • Negative mixtures (correct)
  • Suspensions mixtures
  • Particles smaller than 100 µm are generally considered:

  • Free-flowing
  • Aggregative
  • Cohesive (correct)
  • Neutral
  • What type of mixtures require continuous energy input to keep the components adequately dispersed?

    <p>Negative mixtures</p> Signup and view all the answers

    Which type of mixtures are static in their behavior and do not tend to segregate spontaneously after energy input?

    <p>Neutral mixtures</p> Signup and view all the answers

    What is the main objective of mixing pharmaceutical components?

    <p>To ensure a consistent dose</p> Signup and view all the answers

    Why is it important to mix lubricants with granules during tablet production?

    <p>To ensure proper mixing and production of tablets</p> Signup and view all the answers

    In pharmaceutical preparations, why is it crucial to mix two immiscible liquids or disperse a solid in a liquid?

    <p>To ensure product quality and stability</p> Signup and view all the answers

    Why must the degree of mixing be of a higher order when combining a potent drug with other components?

    <p>To ensure even distribution of the API</p> Signup and view all the answers

    What characterizes an 'ideal' mix according to the text?

    <p>Having each unit of components lie closest to each other</p> Signup and view all the answers

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