Point out the false statement.

  • A
    Brownian movement and Tyndall effect are shown by colloidal systems.
  • B
    Gold number is a measure of the protective power of a lyophilic colloid.
  • C
    The colloidal mixture of a liquid in liquid is called gel.
  • D
    Hardy-Schulze rule is related to coagulation power.

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Why are some medicines more effective in the colloidal form?

Give information about the applications of colloids.

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Match the following types of colloidal systems given in List-$I$ with their respective names given in List-$II$.
List-$I$List-$II$
$(A)$ Solid dispersed in liquid$(I)$ Emulsion
$(B)$ Liquid dispersed in liquid$(II)$ Foam
$(C)$ Gas dispersed in liquid$(III)$ Gel
$(D)$ Liquid dispersed in solid$(IV)$ Sol
-$(V)$ Aerosol

The surface tension of a lyophilic sol is ............

Which of the following is the best protective colloid?

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