Match List I with List II:

1 2026 The d- and f-Block ElementsCatalytic role of transition metals and their compounds Medium
Match List I with List II:

Column I

  • i. $V_2O_5$
  • ii. Fe
  • iii. $PdCl_2$
  • iv. Ni complex

Column II

  • a. Preparation of ammonia from $N_2/H_2$ Mixture
  • b. Polymerisation of alkynes
  • c. Preparation of $H_2SO_4$ from $SO_2$
  • d. Oxidation of ethyne to ethanal

Correct answer: i → c, ii → a, iii → d, iv → b

Detailed Solution

$V_2O_5$: preparation of $H_2SO_4$ from $SO_2$ (Contact process) Fe: $N_2 + 3H_2 \rightarrow 2NH_3$ (Haber process) $PdCl_2$: oxidation of ethyne to ethanal (Wacker process) Ni complex: polymerisation of alkynes Correct match: i-c, ii-a, iii-d, iv-b.

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