Match the following
| Set 1 | Set 2 |
| (1) Bauxite | (p) Bayers |
| (2) Zinc blend | (q) Blast Furnace |
| (3) Copper pyrites | (r) Hall- heroul |
| (4) Haematite | () Bessemerisation |
| | (t) *** Clay cylindrical retort |
(a) 1-r & p, 2-t, 3-*, 4-q
(b) 1-p, 2-t, 3-*, 4-q
(c) 1-r, 2-, 3-, 4-q
(d) 1-r, 2-t, 3-*, 4-q
