Introduction to Separation Processes
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Questions and Answers

What is the main difference between chromatography and adsorption?

  • Chromatography uses solid adsorbents, while adsorption uses liquid adsorbents on a solid support.
  • Chromatography separates components in gas or liquid mixtures, while adsorption is used to remove components present in low concentrations.
  • Chromatography involves passing the feed through a bed of packing, while adsorption requires a pressure field. (correct)
  • Chromatography is used for the purification of p-xylene, while adsorption is used for the separation of xylene isomers and ethylbenzene.

    • Which method involves a chemical reaction and requires the use of resin with ion-active sites?

  • Electrolysis
  • Ion Exchange (correct)
  • Centrifugation
  • Electrodialysis

    • What is the force field or gradient involved in electrolysis?

  • Magnetic force field
  • Electric force field (correct)
  • Gravitational force field
  • Centrifugal force field

    • In which method are cation and anion-permeable membranes used to prevent migration of like-charged species?

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

    What is the purpose of separating uranium isotopes through centrifugation?

    <p>To separate fluid mixtures according to molecular weight</p> Signup and view all the answers

    How does ion exchange differ from adsorption?

    <p>Adsorption requires solid particles, while ion exchange uses resin with ion-active sites.</p> Signup and view all the answers

    What does electrodialysis primarily prevent through its membranes?

    <p>Migration of species with similar charges</p> Signup and view all the answers

    Which method establishes an electrical force field for its operation?

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

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