The gold number is maximum for which of the f | vedclass

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(D) The gold number is a measure of the protective power of a lyophilic colloid. It is defined as the minimum amount of the protective colloid (in $mg

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Potato starch

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(D) The gold number is a measure of the protective power of a lyophilic colloid. It is defined as the minimum amount of the protective colloid (in $mg$) that must be added to $10 \ mL$ of a standard red gold sol to prevent its coagulation when $1 \ mL$ of a $10\%$ $NaCl$ solution is added. Lower gold number indicates higher protective power. Among the given options,Gelatin has a very low gold number $(0.005-0.01)$,while Potato starch has a significantly higher gold number $(20-25)$. Therefore,the gold number is maximum for Potato starch.

List-$I$	List-$II$
$A$. Negatively charged sol	$I$. $Fe_{2}O_{3} \cdot xH_{2}O$
$B$. Macromolecular colloid	$II$. $CdS$ sol
$C$. Positively charged sol	$III$. Starch
$D$. Cheese	$IV$. $A$ gel

The gold number is maximum for which of the following lyophilic sols?

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

List-$I$ List-$II$

$A$. Negatively charged sol $I$. $Fe_{2}O_{3} \cdot xH_{2}O$

$B$. Macromolecular colloid $II$. $CdS$ sol

$C$. Positively charged sol $III$. Starch

$D$. Cheese $IV$. $A$ gel

Choose the correct answer from the options given below:

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