List of top Mineral Processing and Extractive Metallurgy Questions on Iron Making and Non-Ferrous Extraction Processes

Match the unit operation in Column I with the resulting product in Column II:
Column IColumn II
(P) COREX Process(1) Direct Reduced Iron
(Q) Bayer Process(2) Pig Iron
(R) Matte Smelting(3) Alumina
(S) MIDREX Process(4) Copper