Write the matched set (of three) for each entry in Column A
`{:(A,B,C),("Asbestos","Paramagnetic","Air pollutant"),("Lithium metal","Silicates of Ca and Mg","Electron donor"),("Nitric oxide","Reducing agent",):}`

Column - I and Column - II contains four emtries each. Entries of Column -I are to be matched with some entries of Column - II . One or more than one entries of Column -I may have the matching with the same entries of Column - II. {:("column-I","column-II"),("(A) peptization ","(P) preparation of sols "),("(B) Ultra centrifugation ",(Q) " Purification of sols "),("(C) Electrodialysis","(R) perparation of metal sols "),("(D) Breding's arc method ","(S) movement of ions acress the membrane in prsence of electric field "):}

Column-I and Column-II contains fore entries each. Entries of Column-I are to be matched with some enties of Column-II One or more than one entries of Column-I may have the matching with the same entries oc Column-II. {:(,"ColumnI",,"ColumnII"),((A),"Electron",(P),"Negetive charge"),((B),"Proton",(Q),"Positive charge"),((C),"Neutron",(R),1.6xx10^(-19)C),((D),"Positron",(S),"Chargeless"):}