(B) Lyophilic (hydrophilic) colloids act as protective colloids. When a lyophilic sol is added to a lyophobic (hydrophobic) sol,the lyophilic particle

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(B) Lyophilic (hydrophilic) colloids act as protective colloids. When a lyophilic sol is added to a lyophobic (hydrophobic) sol,the lyophilic particles form a protective layer around the lyophobic particles,preventing them from coagulation in the presence of electrolytes.

Class 12 Chemistry Surface Chemistry Colloids, Emulsion, Gel and Their properties with application

Medium

Which of the following can act as protective colloids?

A
Hydrophobic sols
B
Hydrophilic sols
C
Gold sol
D
None of these

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Class 12 Questions

Class 12

Chemistry Questions

Chapter

Surface Chemistry

Subtopic

Colloids, Emulsion, Gel and Their properties with application

Pumice stone is an example of which type of colloidal system?

Easy

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Match the following:-

List-$I$ List-$II$

$A$. Dialysis $IV$. Purification of colloidal mixture

$B$. Peptization $I$. Precipitate converts to colloidal mixture

$C$. Flocculation $II$. Precipitation of colloidal mixture

$D$. Gold number $III$. Protective power

List-$I$	List-$II$
$A$. Dialysis	$IV$. Purification of colloidal mixture
$B$. Peptization	$I$. Precipitate converts to colloidal mixture
$C$. Flocculation	$II$. Precipitation of colloidal mixture
$D$. Gold number	$III$. Protective power