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NEET2026Chemistryd and f Block ElementsActual

Match List I with List II : List I (Transition metal/compound/complex) List II (Catalytic Role) A. V ₂ O ₅ I. Preparation of ammonia from N ₂/ H ₂ mixture B. Fe II. Polymerisation of alkynes C. PdCl ₂ III. Preparation of H ₂ SO ₄ from SO ₂ D. Ni complex IV. Oxidation of ethyne to ethanal Choose the correct answer from the options given below :

Options

  1. AA-III, B-IV, C-I, D-II
  2. BA-IV, B-I, C-III, D-II
  3. CA-II, B-I, C-IV, D-III
  4. DA-III, B-I, C-IV, D-II

Correct answer

D. A-III, B-I, C-IV, D-II

Step-by-step solution

V ₂ O ₅ is used as a catalyst in the Contact process for the oxidation of SO ₂ to SO ₃ during the preparation of H ₂ SO ₄ . Thus, A matches with III. Finely divided Fe is used as a catalyst in the Haber process for the preparation of ammonia from N ₂ and H ₂ mixture. Thus, B matches with I. PdCl ₂ is used as a catalyst in the Wacker process for the oxidation of ethene (referred to as ethyne in the given options) to ethanal. Thus, C matches with IV. Ni complexes are used as catalysts for the polymerisation of alkyne

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