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 problem of matching the processes in Column I with their respective purification methods in Column II, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the Processes:**
- A: Mond's process
- B: Van Arkel method
- C: Cupellation
- D: Distillation

2. **Understand the Purification Methods:**
- 1: Purification of copper
- 2: Purification of zinc
- 3: Purification of nickel
- 4: Purification of titanium

3. **Match Each Process with the Correct Purification Method:**
- **Mond's Process (A)**: This process is specifically used for the purification of nickel. Nickel is reacted with carbon monoxide to form nickel carbonyl (Ni(CO)₄), which is then decomposed to yield pure nickel. Therefore, A matches with **3** (Purification of nickel).

- **Van Arkel Method (B)**: This method is used for the purification of titanium. It involves the removal of oxygen and nitrogen from titanium. Therefore, B matches with **4** (Purification of titanium).

- **Cupellation (C)**: This process is used for refining noble metals and is particularly effective for the purification of copper. It involves the removal of impurities from copper ores. Therefore, C matches with **1** (Purification of copper).

- **Distillation (D)**: This method is used for purifying metals with low boiling points, such as zinc. Therefore, D matches with **2** (Purification of zinc).

4. **Final Matching:**
- A → 3 (Mond's process → Purification of nickel)
- B → 4 (Van Arkel method → Purification of titanium)
- C → 1 (Cupellation → Purification of copper)
- D → 2 (Distillation → Purification of zinc)

5. **Conclusion:**
- The correct matches are:
- A: 3
- B: 4
- C: 1
- D: 2

### Final Answer:
The correct option is **3**.