Match List I with List II and select the correct answer using the codes given below :
`{:(,"Column - I",,"Column - II"),(A,"Mond's process",1.,"Purification of copper"),(B,"Van Arkel method",2.,"Purification of zinc"),(C,"Cupellation",3.,"Purification of nickel"),(D,"Distillation",4.,"Purification of titanium"):}`

Options

A. `{:(A,B,C,D),(1,2,3,4):}`
B. `{:(A,B,C,D),(2,3,4,1):}`
C. `{:(A,B,C,D),(3,4,1,2):}`
D. `{:(A,B,C,D),(4,1,2,3):}`

Answer

To solve the question of matching List I with List II, we will analyze each process in Column I and determine its corresponding purification method in Column II.

### Step-by-Step Solution:

1. **Mond's Process (A)**:
- This process is specifically used for the purification of nickel.
- In this method, nickel reacts with carbon monoxide to form a volatile complex, which is then decomposed to yield pure nickel.
- **Match**: A → 3 (Purification of nickel)

2. **Van Arkel Method (B)**:
- Also known as vapor phase refining, this method is used for the purification of titanium and zirconium.
- In this process, the metal is converted into its volatile tetra iodide form by reacting with iodine, which is then thermally decomposed to obtain pure metal.
- **Match**: B → 4 (Purification of titanium)

3. **Cupellation (C)**:
- This method is used for refining noble metals like gold and silver from base metals such as copper and zinc.
- It involves the separation of noble metals from impurities.
- **Match**: C → 1 (Purification of copper)

4. **Distillation (D)**:
- Distillation is used for metals that have low melting points, allowing them to vaporize while impurities remain solid.
- This method is commonly used for the purification of zinc, mercury, and arsenic.
- **Match**: D → 2 (Purification of zinc)

### Final Matches:
- A → 3 (Purification of nickel)
- B → 4 (Purification of titanium)
- C → 1 (Purification of copper)
- D → 2 (Purification of zinc)

### Correct Answer:
Based on the matches, the correct answer is option **3**.

---