Purification Of Colloidal Solution

Match the following questions {:("COLUMN - I ","COLUMN - II "),("A) Gold sol ","p) Bredig's Arc method "),("B) Purification of Colloidal solution ","q) - ve charged "),("C) "As_2 S_3 "sol","r) Ultra centrifugation "),("D) Zeta potential ","s) Electro kinetic potential "),(,"t) Double decomposition reaction"):}

Colloidal Solution,Classification OF Colloidal Solutions, Lyophilic and Lyophobic Colloids,Preparation OF Colloids

Colloidal solution is-

Colloidal solutions || Classification OF colloidal solution

Purification of colloidal is done by -

"Peptisation,Protection OF Colloids and Gold Number,Methods OF Coagulation, Purification OF Colloids,Emulsions and their Classification"

During purification of colloidal sol by ultracentrifugation which of the following is . Observed ?