The catalysts which can be used in the manufacture of `H_2SO_4` are

Options

A. oxides of nitrogen
B. `V_(2)O_(5)`
C. platinised asbestos
D. Ni

Answer

To solve the question regarding the catalysts used in the manufacture of H₂SO₄, we will follow these steps:

### Step 1: Understand the Process
The primary method for the production of sulfuric acid (H₂SO₄) is the Contact Process. This process involves the oxidation of sulfur dioxide (SO₂) to sulfur trioxide (SO₃), which is then converted to sulfuric acid.

**Hint:** Identify the main steps involved in the Contact Process for sulfuric acid production.

### Step 2: Identify the Catalysts
In the Contact Process, certain catalysts are used to facilitate the reaction between sulfur dioxide and oxygen to form sulfur trioxide. The most commonly used catalyst is vanadium pentoxide (V₂O₅).

**Hint:** Focus on the specific catalysts that are known to enhance the reaction rates in the Contact Process.

### Step 3: List Other Possible Catalysts
While V₂O₅ is the primary catalyst, other substances like platinum can also be used as a catalyst. However, materials like nickel and platinized asbestos are not typically used in this process.

**Hint:** Consider the effectiveness and common usage of various catalysts in industrial applications.

### Step 4: Conclusion
The main catalysts that can be used in the manufacture of H₂SO₄ are:
1. Vanadium pentoxide (V₂O₅)
2. Platinum (though less common than V₂O₅)

**Hint:** Summarize the key catalysts and their roles in the chemical reactions involved in the production of sulfuric acid.

### Final Answer
The catalysts which can be used in the manufacture of H₂SO₄ are:
- Vanadium pentoxide (V₂O₅)
- Platinum (Pt)