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Question

Which of the following are macromolecular colloids?


A

Soap

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B

Starch

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C

Cellulose

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D

Both (B) and (C)

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Solution

The correct option is D

Both (B) and (C)


Explanation for the correct option:

  • In this form of colloids, macromolecules such as polymers serve as the disperse phase.
  • When these macromolecules are dissolved in a dispersion medium, they generate solutions in which the molecules are dispersed.
  • Macromolecular colloids are lyophobic in nature and have a high molecular mass.
  • Polymers like starch and cellulose are formed from such colloids.

Explanation for the incorrect option:

Option A: Soap

  • The creation of aggregates of microscopic particles results in formation of colloids known as aggregated or related colloids.
  • Aggregated colloids are Lyophilic in nature and have low molecular mass.
  • Associated colloids include soap and detergent.

Therefore, option (D) is correct.


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