When $Fe(OH)_3$ is treated with $FeCl_3$ solution,a reddish-brown solution is formed. The process involved is:

The surface tension of a hydrophilic sol is:

If $1000 \ mg$ of a lyophilic colloid prevents the coagulation of $100 \ mL$ of a lyophobic sol,then the gold number (protective value) is ......... $mg$.

$Statement-1$: Micelles are formed by surfactant molecules above the critical micellar concentration $(CMC)$.
$Statement-2$: The conductivity of a solution having surfactant molecules decreases sharply at the $CMC$.

Which one is an example of a multimolecular colloid system?

The rate of dialysis depends upon: