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Question

Milk is colloid in which


A

a liquid is dispersed in the liquid

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B

a solid is dispersed in the liquid

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C

some sugar is dispersed in water

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D

a gas is dispersed in the liquid

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Solution

The correct option is A

a liquid is dispersed in the liquid


Explanation for Correct answer:

Option A liquid is dispersed in the liquid

  • The mixture in which one substance of dispersed insoluble particles is suspended throughout the other substance is known as colloids.
  • Colloids can be classified on the basis of the phase of the dispersed substance and the phase in which it is dispersed.
  • Sol, emulsion, foam, and aerosol are the different types of colloids.
  • The colloidal suspension with solid particles in a liquid is known as Sol.
  • An emulsion is a mixture of two liquids.
  • Foam is formed when many gas particles are trapped in a liquid or solid.
  • Aerosol contains small particles of liquid or solid dispersed in a gas
  • Milk is a colloid in which a liquid is dispersed in a liquid(emulsion).
  • In milk, the fat and water cannot be mixed together to form a solution thus two immiscible phases of liquids are visible
  • Hence option (A) is correct.

Explanation for incorrect answers:

Option B a solid is dispersed in the liquid

  • Milk is a colloid in which a liquid is dispersed in a liquid.
  • Hence option (B) is incorrect.

Option C some sugar is dispersed in water

  • Milk is a colloid in which a liquid is dispersed in a liquid.
  • Hence option (C) is incorrect.

Option D some sugar is dispersed in water

  • Milk is a colloid in which a liquid is dispersed in a liquid.
  • Hence option (D) is incorrect.

Therefore, Milk is colloid in which option (A) a liquid is dispersed in the liquid


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