Ncert Exercises & Solutions

Match the items in Column I with the items in Column II, and assign the correct code.

Codes

Hint: Froth floatation process is used for dressing of ZnS.

A. Cyanide process is used for extraction of Au through the formation of anionic complex

[Au]

{(CN)}_{2} -

B. Froth floatation process is used for dressing of ZnS.

C. Electrolytic reduction method is used for extraction of aluminium. Graphite electrode is used for this purpose.

D. Zone-refining is used for purification of Ge.