NEET 2026 (Phase 1) · ChemistryPrevious Year Question
Match List I with List II: List I (Transition metal/compound/complex) (a) \ce{V2O5} (b) \ce{Fe} (c) \ce{PdCl2} (d) Ni complex List II (Catalytic Role) (i) Preparation of ammonia from \ce{N2}/\ce{H2} mixture (ii) Polymerisation of alkynes (iii) Preparation of \ce{H2SO4} and \ce{SO2} (iv) Oxidation of ethyne to ethanal Choose the correct answer from the options given below:
- A.(a) A-III, B-IV, C-I, D-II
- B.(b) A-IV, B-I, C-III, D-II
- C.(c) A-II, B-I, C-IV, D-III
- D.(d) A-III, B-I, C-IV, D-II✓
Correct Answer
(D) (d) A-III, B-I, C-IV, D-II
Solution & Explanation
\textbf{Answer:} (d) A-III, B-I, C-IV, D-II \textbf{Solution:} \ce{V2O5} is the catalyst in the Contact process for manufacturing \ce{H2SO4} (oxidation involving \ce{SO2}), so A-III. \ce{Fe} is the catalyst in the Haber process for making ammonia from \ce{N2} and \ce{H2}, so B-I. \ce{PdCl2} catalyses the Wacker oxidation of ethyne (and alkenes) to give ethanal, so C-IV. Nickel complexes are used in the polymerisation of alkynes (Reppe-type reactions), so D-II. The correct match is A-III, B-I, C-IV, D-II.
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