Few reactions of industrial importance are listed below. Which of the followign catalysts is not correctly matched with the reaction ?

Options

A. Haber's process: Finely divided Fe+Mo as promoter
B. Contact process :`V_(2)O_(5)`
C. Ostwald's process : `Fe_(2)O_(3)`
D. None of these

Explanation

To solve the question regarding the catalysts used in various industrial processes, we will analyze each option step by step.

### Step 1: Analyze the First Option - Haber’s Process
- **Reaction**: N₂ + 3H₂ → 2NH₃ (Ammonia production)
- **Catalyst**: Iron (Fe) with Molybdenum (Mo) as a promoter.
- **Conclusion**: This statement is correctly matched. The Haber process uses iron as a catalyst and molybdenum as a promoter.

### Step 2: Analyze the Second Option - Contact Process
- **Reaction**: SO₂ + O₂ → SO₃ (Sulfur trioxide production)
- **Catalyst**: Vanadium pentoxide (V₂O₅).
- **Conclusion**: This statement is also correctly matched. The contact process uses vanadium pentoxide as a catalyst.

### Step 3: Analyze the Third Option - Ostwald Process
- **Reaction**: NH₃ + O₂ → NO (Nitric oxide production)
- **Catalyst**: The statement mentions Iron (III) oxide (Fe₂O₃).
- **Correct Catalyst**: The Ostwald process actually uses either Nickel (Ni) or Rhodium (Rh) as catalysts, not Fe₂O₃.
- **Conclusion**: This statement is incorrectly matched. The correct catalysts for the Ostwald process are nickel or rhodium.

### Step 4: Analyze the Fourth Option
- Since the question only asks for the option that is not correctly matched, we can conclude that the third option is the only incorrect one.

### Final Answer
The catalyst that is not correctly matched with the reaction is **Option C** (Ostwald Process with Fe₂O₃).

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