Match items of Column I with the items of Column II and asign the correct code : array ll 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 array

1. A. a-iv, b-ii, c-iii, d-i
2. B. a-ii, b-iii, c-i, d-v
3. C. a-i, b-ii, c-iii, d-iv
4. D. a-iii, b-iv, c-v, d-i

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