Match the types of colloidal systems given in Column I with the name given in Column II.
`{:(,"Column I","Column II"),(A.,"Solid in liquid",1."Foam"),(B.,"Liquid in solid ",2."Sol"),(C.,"Liquid in liquid ",3."Gel"),(D.,"Gas in liquid",4."Emulsion"):}`

Answer

`A. to (2)` `B. to (3)` `C. to (4)` `D. to (1)`

Explanation

Colloids are classified on the basis of types of dispersed phase and dispersion medium.
`{:(,"Dispersed phase ","Dispersion medium","Name"),(A.,"Solid in", "Liquid","Sol"),(B.,"Liquid in", "Solid ","Gel"),(C.,"Liquid in","Liquid ","Emulsion"),(D.,"Gas in","Liquid ","Foam"):}`