Van - Arkel process and Mond's process are respectively used for refining of :

Options

A. Zr and Ti
B. Ni and Zr
C. Ti and Ni
D. Ni and Fe

Answer

To solve the question regarding the refining processes used for certain metals, we can follow these steps:

### Step 1: Understand the Processes
1. **Van-Arkel Process**: This is a method used for refining certain metals, particularly titanium and zirconium. It involves the formation of volatile compounds that can be decomposed to yield pure metal.

2. **Mond's Process**: This process is primarily used for refining nickel. It involves the formation of nickel carbonyl, a volatile compound, which is then decomposed to obtain pure nickel.

### Step 2: Identify the Metals
- From the question, we need to identify which metals are refined by these processes:
- **Van-Arkel Process**: Used for refining **Zirconium** and **Titanium**.
- **Mond's Process**: Used for refining **Nickel**.

### Step 3: Match the Options
Now, we need to match the processes with the correct metals based on the options provided:
- **Option 1**: Zirconium and Titanium
- **Option 2**: Nickel and Zirconium
- **Option 3**: Titanium and Nickel
- **Option 4**: Nickel and Iron

From our understanding:
- Van-Arkel is for **Zirconium** (and also Titanium).
- Mond's is for **Nickel**.

### Step 4: Conclusion
The correct pairing according to the processes is:
- **Van-Arkel Process**: Zirconium
- **Mond's Process**: Nickel

Thus, the correct answer is **Zirconium and Nickel**.

### Final Answer
The answer is **Option 2: Zirconium and Nickel**.

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