Match the entries of column I with appropriate entries of column II and choose the correct option but of the four options (a), (b), (c ), (d) given at the end of each question.
`{:(, "Column I",,,"Column II"), ((A), "Zone refining",,(p),"Titanium"),((B),"Mond's process",,(q),"Lead"),((C),"Liquation",,(r),"Nickel"), ((D),"van - Arkel",,(s),"Germanium"):}`

Options

A. A-r, B-p, C-s, D-q
B. A-s, B-r, C-q, D-p
C. A-s, B-q, C-r, D-p
D. A-q, B-s, C-p, D-r

Answer

To solve the matching question between Column I and Column II, we will analyze each entry in Column I and find its corresponding match in Column II based on the purification processes used for different metals.

### Step-by-Step Solution:

1. **Identify the first entry in Column I: Zone refining (A)**
- Zone refining is a method used for purifying metals that require extremely high purity. This method is particularly effective for semiconductors and is commonly used for germanium.
- **Match:** A → s (Germanium)

2. **Identify the second entry in Column I: Mond's process (B)**
- Mond's process is a method used for the purification of nickel. In this process, nickel reacts with carbon monoxide to form nickel carbonyl (Ni(CO)₄), which is then decomposed to yield pure nickel.
- **Match:** B → r (Nickel)

3. **Identify the third entry in Column I: Liquation (C)**
- Liquation is a process used to separate metals with low melting points from those with higher melting points. This method is commonly used for metals like lead (Pb) and tin (Sn).
- **Match:** C → q (Lead)

4. **Identify the fourth entry in Column I: Van-Arkel process (D)**
- The Van-Arkel process is used for the purification of titanium and zirconium. In this process, the metal is converted to a volatile iodide, which is then decomposed to yield pure metal.
- **Match:** D → p (Titanium)

### Final Matches:
- A → s (Germanium)
- B → r (Nickel)
- C → q (Lead)
- D → p (Titanium)

### Conclusion:
The correct matches are:
- A → s
- B → r
- C → q
- D → p

### Selecting the Correct Option:
Based on the matches:
- The correct option is (b).

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