Match List-I with List-II. List-I Lis | vedclass

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(A) . Lyophilic colloids act as protective colloids because they form a protective layer around lyophobic particles.$B$. Emulsions are colloidal syste

Vedclass · Accepted Answer

$A-II, B-I, C-IV, D-III$

Vedclass · Answer

(A) . Lyophilic colloids act as protective colloids because they form a protective layer around lyophobic particles.$B$. Emulsions are colloidal systems where both the dispersed phase and the dispersion medium are liquids (liquid-liquid colloid).$C$. The reaction of $FeCl_3$ with hot water leads to the formation of a positively charged sol of hydrated ferric oxide $(Fe_2O_3 \cdot xH_2O)$.$D$. The reaction of $FeCl_3$ with $NaOH$ (in excess) leads to the formation of a negatively charged sol due to the preferential adsorption of $OH^-$ ions on the surface of the precipitate.Therefore,the correct matching is $A-II, B-I, C-IV, D-III$.

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	$IV$. $FeCl_3 + \text{hot water}$

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