(D) The $Tyndall$ effect is the primary and most common optical phenomenon used to distinguish between a true solution and a colloidal solution. When

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(D) The $Tyndall$ effect is the primary and most common optical phenomenon used to distinguish between a true solution and a colloidal solution. When a beam of light is passed through a colloidal solution,the particles scatter the light,making the path of the beam visible. This does not happen in a true solution because the particles are too small to scatter light.

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

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What is the primary test to verify whether a solution is in colloidal form or not?

A
Based on the motion of particles
B
Based on the size of particles
C
By ultrafiltration
D
Tyndall effect

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Surface Chemistry

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Colloids, Emulsion, Gel and Their properties with application

At high concentration of soap in water,soap behaves as a

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What happens when gelatin is mixed with a gold sol?

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Match List-$I$ with List-$II$.

List-$I$ List-$II$

$A$. Lyophilic colloid $I$. Liquid-liquid colloid

$B$. Emulsion $II$. Protective colloid

$C$. Positively charged colloid $III$. $FeCl_3 + NaOH$

$D$. Negatively charged colloid $IV$. $FeCl_3 + \text{hot water}$

Choose the correct answer from the options given below:

List-$I$	List-$II$
$A$. Lyophilic colloid	$I$. Liquid-liquid colloid
$B$. Emulsion	$II$. Protective colloid
$C$. Positively charged colloid	$III$. $FeCl_3 + NaOH$
$D$. Negatively charged colloid	$IV$. $FeCl_3 + \text{hot water}$