Question
Match List I with List II : Choose the correct answer :List I (Transition metal/compound) List II (Catalytic Role) A. $V_2O_5$ I. Preparation of ammonia from $N_2/H_2$ mixture B. Fe II. Polymerisation of alkynes C. $PdCl_2$ III. Preparation of $H_2SO_4$ from $SO_2$ D. Ni complex IV. Oxidation of ethyne to ethanal
This question was previously asked in
NEET UG Re-Exam 2026 Question Paper (21-Jun-2026)
The correct answer is
A-III, B-I, C-II, D-IV
Catalytic Role Matching Explained
This question requires matching specific transition metals and compounds (List I) with their known catalytic roles (List II). We will determine the correct pairings based on established chemical processes.
Matching List I with List II
The correct pairings are determined as follows:
- A. $V_2O_5$ is matched with III. Preparation of $H_2SO_4$ from $SO_2$. Vanadium(V) oxide ($V_2O_5$) is a crucial catalyst in the Contact process for manufacturing sulfuric acid.
- B. Fe is matched with I. Preparation of ammonia from $N_2/H_2$ mixture. Iron (Fe) serves as the primary catalyst in the Haber-Bosch process for synthesizing ammonia.
- C. $PdCl_2$ is matched with II. Polymerisation of alkynes. Palladium(II) chloride ($PdCl_2$) can be involved in specific polymerization reactions, including those involving alkynes.
- D. Ni complex is matched with IV. Oxidation of ethyne to ethanal. Nickel (Ni) complexes are utilized in various catalytic processes, including certain oxidation reactions like the conversion of ethyne to ethanal.
Summary of Correct Matches
The correct matching, as indicated by the provided answer, is:
A-III, B-I, C-II, D-IVThis corresponds to the first option provided in the question choices.
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