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Question

A colloid is a ______ mixture and its components can be separated by the technique known as ______.


A

heterogeneous

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B

centrifugation

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Solution

Colloids:

  • Colloids are mixtures in which microscopically dispersed insoluble particles of one substance are suspended in another substance.
  • The size of the suspended particles in a colloid can range from 1 to 1000 nanometers.
  • Colloids are heterogeneous in nature.
  • Colloids are separated through the centrifugation technique.

Heterogeneous mixtures

  • Heterogenous mixtures in which all the components are completely mixed and all the particles can be seen under a microscope.
  • Particles are distributed non-uniformly
  • There are two or more phases.
  • It can be separated out physically.

Centrifugation.

  • The filtration technique cannot be utilized to separate such particles .such mixtures are separated by centrifugation.
  • A centrifuge is a device that separates different components of a fluid using centrifugal force. This is accomplished by spinning the fluid at a high speed within a container separating different densities of fluids or liquids from solids.

Therefore, a colloid is a heterogeneous mixture and its components can be separated by the technique known as centrifugation.


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