Match List I with List II : array llll ; & List I (Transition metal/compound/complex) & ; & List II (Catalytic Role) A. & V2O5 & I. & Preparation of ammonia from N2/H2 mixture B. & Fe & II. & Polymerisation of alkynes C. & PdCl2 & III. & Preparation of H2SO4 and SO2 D. & Ni complex & IV. & Oxidation of ethyne to ethanal array Choose the correct answer from the options given below.

1. A. A-III, B-IV, C-I, D-II
2. B. A-III, B-I, C-IV, D-II
3. C. A-II, B-I, C-IV, D-III
4. D. A-IV, B-I, C-III, D-II

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