Ferric hydroxide sol is a positively charged colloid. The coagulating power of $NO_3^-$,$SO_4^{2-}$,and $PO_4^{3-}$ ions would be in the order:

Which of the following statements about colloids is false?

Silver iodide is used for producing artificial rain because $AgI$:

Colloidal gold solutions prepared by different methods have different colors due to:

Lyophilic sols are:

The critical micelle concentration $(CMC)$ of a soap solution is $5 \times 10^{-4} \ mol \ L^{-1}$. Identify the correct statements about this solution.
$I$. The micelle is stable if the soap solution concentration is $10^{-7} \ mol \ L^{-1}$
$II$. The micelle is stable if the soap solution concentration is higher than $5 \times 10^{-4} \ mol \ L^{-1}$
$III$. Micelles are also known as associated colloids.