Match List I with List II
List I (Substances)
A. Ziegler catalyst
B. Blood Pigment
C. Wilkinson catalyst
D. Vitamin B₁₂

List II (Element Present)
I. Rhodium
II. Cobalt
III. Iron
IV. Titanium
Choose t

Question

Match List I with List II
List I (Substances)
A. Ziegler catalyst
B. Blood Pigment
C. Wilkinson catalyst
D. Vitamin B₁₂

List II (Element Present)
I. Rhodium
II. Cobalt
III. Iron
IV. Titanium
Choose the correct answer from the options given below:

Canvas Classes · Accepted Answer

Identifying the metal in each substance:

| Substance | Metal | Reasoning |
|---|---|---|
| Ziegler catalyst | Titanium (Ti) | Ziegler-Natta catalyst = TiCl₄ + Al(C₂H₅)₃; used for polymerization |
| Blood Pigment (Haemoglobin) | Iron (Fe) | Haemoglobin contains heme group with Fe²⁺ at the centre |
| Wilkinson catalyst | Rhodium (Rh) | ClRh[P(C₆H₅)₃]₃ — Wilkinson's catalyst for hydrogenation |
| Vitamin B₁₂ (Cyanocobalamin) | Cobalt (Co) | Vitamin B₁₂ contains cobalt at the centre of a corrin rin

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