Match items of Column I with the items of Column II and assign the correct code:
`{:(ColumnI,ColumnII),((A)"Cyanide process",(1)"Ultrapure Ge"),((B)"Froth Floatation Process",(2)"Dressing of"ZnS),((C)"Electrolytic reduction",(3)"Extraction of AI"),((D)"Zone refining",(4)"Extraction of AU"),(,(5)"Purification of Ni"):}`

Match items of Column-I with the items of Column II and assign the correct code : {:(" Column-I "," Column-II "),("a) Cyanide process ","i) Ultrapure Ge "),("b) Froth floatation process ","ii) Dressing of ZnS "),("c) Electrolytic reduction ","iii) Extraction of Al "),("d) Zone refining ","iv) Extraction of Au "),(,"v) Purification of Ni "):}

{:("Column - I","Column - II"),("(A) Cyanide process","(i) Ultrapure Ge"),("(B) Froth-floatation","(ii) Dressing of ZnS"),("(C) Electrolytic reduction","(iii) Al extraction"),("(D) Zone refining","(iv) Au extraction"),(,"(v) Purification of Ni"):}

Match the items of Column I with the items of Column II and assign the correct code: {:(ColumnI,ColumnII),((A)"Sapphire",(1)Al_(2)O_(3)),((B)"Sphalerite",(2)NaCN),((C)"Depresant",(3)Co),((D)"Corundum",(4)ZnS),(,(5)Fe_(2)O_(3)):}

Match coloumn I with column II and select the correct answer using the codes given below the lists and select the correct answer using the code given the lists : {:(,"Column"I,,"Column"II,),(,I."Cyanide process",,(a)"Ultra pure Ge",),(,II."Froth floatation process",,(b )"Pine oil",),(,III."Electroytic reduction",,(c ) "Extration of Al.",),(,IV."Zone refining",,(d) "Extration of Au.",):}

Match the items of Column I with the items of Column II and assign the correct code: {:(ColumnI,ColumnII),((A)"Sapphire",(1)AI_(2)O_(3)),((B)"Sphalerite",(2)NaCN),((C)"Depresant",(3)Co),((D)"Corundum",(4)ZNS),(,(5)Fe_(2)O_(3)):}

Match the items of Column I with the items of Column II and assign the correct code: {:(ColumnI,ColumnII),((A)"Coloured bands",(1)"Zone refining"),((B)"Impure metal to volatile complex",(2)"Fractional distillation"),((C)"Purification of Ge and Si",(3)"Mond process"),((D)"Purification of mercury",(4)"Chromatography"),(,(5)"Liquation"):}