Extraction Methods Lecture Quiz
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Questions and Answers

What is the controlling factor in the rate of extraction?

  • The concentration of the solvent
  • The temperature of the solvent
  • The rate of diffusion of the solute through the boundary layer(s) at the interface (correct)
  • The size of the extraction equipment

Which method is used for leaching that involves the raw material forming a permeable bed through which the solvent percolates?

  • Dissolution
  • Percolation (correct)
  • Immersion
  • Extraction

What is an example of solid/liquid extraction mentioned in the text?

  • The extraction of minerals from ores
  • The extraction of vitamins from fruits
  • The extraction of fixed oils from seeds (correct)
  • The extraction of essential oils from flowers

What is leaching?

<p>The extraction of soluble constituents from a solid or semisolid by means of suitable solvents (A)</p> Signup and view all the answers

'Miscella' and 'marc' are terms associated with which process?

<p>Leaching (D)</p> Signup and view all the answers

What is the term used for the exhausted solids in the process of leaching?

<p>Marc (B)</p> Signup and view all the answers

Which method of leaching involves the raw material forming a permeable bed through which the solvent percolates?

<p>Percolation (D)</p> Signup and view all the answers

What is leaching?

<p>Extraction of soluble constituents from a solid or semisolid by means of suitable solvents (A)</p> Signup and view all the answers

What is the controlling factor in the rate of extraction?

<p>Rate of diffusion of the solute through the boundary layer(s) at the interface (A)</p> Signup and view all the answers

'Miscella' and 'marc' are terms associated with which process?

<p>Leaching (B)</p> Signup and view all the answers

Study Notes

Leaching

  • The controlling factor in the rate of extraction is the rate of diffusion of the solute from the solid to the solvent.
  • Percolation is a method of leaching where the raw material forms a permeable bed through which the solvent percolates.
  • An example of solid/liquid extraction is leaching, which involves the separation of a soluble substance from an insoluble solid.
  • Leaching is a process of solid/liquid extraction, where a solute is extracted from a solid using a solvent.
  • 'Miscella' and 'marc' are terms associated with the process of leaching.
  • The term used for the exhausted solids in the process of leaching is 'marc'.

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Description

Test your knowledge on extraction methods with this lecture quiz. Topics include definition, types, methods, equipment, and factors affecting the extraction rate.

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