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Question

Which of the following is not an example of an emulsifying agent?


A
Proteins
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B
Gums
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C
Soaps
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D
Electrolytes
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Solution

The correct option is D Electrolytes
  • Emulsions are liquid-liquid colloidal systems, i.e., the dispersion of finely divided droplets in another liquid.
  •  If a mixture of two immiscible or partially miscible liquids is shaken, a coarse dispersion of one liquid in the other is obtained which is called emulsion.
  • Emulsions of oil in water are unstable and sometimes they separate into two layers on standing.
  • The emulsifying agent forms an interfacial film between suspended particles and the medium, which stabilises the Emulsion.
  • Examples of emulsifying agents are proteins, gums, natural and synthetic soaps,heavy metal salts of fatty acids, long chain alcohols, lampblack.
  • Here, electrolyte is not an emulsifying agent and hence is the correct option.

      Chemistry

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