The minimum concentration of an electrolyte in $mol \ L^{-1}$ required to cause coagulation or precipitation of a sol is known as:

What is the movement of colloidal particles under the influence of an electric field called?

An example of an associated colloid is

Which of the following compounds has the highest coagulating power for a ferric hydroxide sol?

The size of particles in suspension,true solution and colloidal solution varies in the order:

When $FeCl_3$ is added to an excess of hot water,it gives a sol '$X$'. When $FeCl_3$ is added to $NaOH_{(aq)}$ solution,it gives a sol '$Y$'. The sols '$X$' and '$Y$' formed in the above processes respectively are: