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:

Under ambient conditions,which among the following surfactants will form micelles in aqueous solution at the lowest molar concentration?

Identify the option having the correct set of True $(T)$ or False $(F)$ statements with respect to colloidal solutions:
$(I)$ Lyophobic colloids are heavily solvated by the dispersion medium.
$(II)$ Multimolecular colloids are usually lyophilic.
$(III)$ Surface tension of a starch aqua sol will be lesser than that of water.
$(IV)$ Blood gets coagulated by the addition of $NaCl$.

Draw the diagram showing micelle formation by the following detergent.
$CH_3(CH_2)_{10}CH_2OSO_3^-Na^{+}$

Which one of the following properties of colloids is related to the scattering of light?

$100 \, cm^3$ of gold sol requires $10^{-4} \, g$ of gelatin to prevent coagulation when $1 \, cm^3$ of $10 \% \, NaCl$ solution is added. The gold number of gelatin is ............ .