Read the following statements carefully: (I) Transition metals act as catalysts due to their ability to adopt multiple oxidation states and form complexes. (II) V ₂ O ₅ catalyses the oxidation of SO ₂ to SO ₃ in the Contact process. (III) Finely divided iron is used as a catalyst in the Ostwald process for the manufacture of nitric acid. (IV) Ziegler-Natta catalyst involves a titanium compound and is used for the pol

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Statement (I) is correct as the catalytic activity of transition metals is attributed to their ability to show variable oxidation states and form complexes. Statement (II) is correct as V ₂ O ₅ is the catalyst used in the Contact process for the manufacture of sulphuric acid. Statement (III) is incorrect because finely divided iron is used in the Haber process for the synthesis of ammonia. The Ostwald process for nitric acid uses a platinised asbestos or Pt/Rh gauge catalyst. Statement (IV) is correct as the Ziegle