Match the refining methods (Column I) and with metals (Column II).
`{:("Column I","Column II"),(("Refining methods"),"(Metals)"),((I) "Liquation",(a) Zr),((II)"Zone Refining",(b) Ni),((III) "Mond Process",(c) Sn),((IV) "Van Arkel Method",(d) Ga):}`

Options

A. (I)-( c), (II)-(a), (III)-(b), (IV)-(d)
B. (I)-( b), (II)-( c), (III)-(d), (IV)-(a)
C. (I)-( c), (II)-(d), (III)-(b), (IV)-(a)
D. (I)-( b), (II)-(d), (III)-(a), (IV)-(c )

Answer

To solve the problem of matching the refining methods with their respective metals, we will analyze each refining method and identify the metal associated with it.

### Step-by-Step Solution:

1. **Identify the refining methods:**
- **Liquation**
- **Zone Refining**
- **Mond Process**
- **Van Arkel Method**

2. **Analyze each refining method:**
- **Liquation:** This method is primarily used for the refining of tin (Sn). It involves melting the ore and allowing the impurities to separate from the metal.
- **Zone Refining:** This method is used for refining metals that can be heated to a specific temperature, particularly for semiconductors and metals like gallium (Ga). It involves melting a small zone of the material and moving it along the rod to purify it.
- **Mond Process:** This process is specifically used for the refining of nickel (Ni). It involves the formation of a volatile nickel carbonyl complex, which is then decomposed to yield pure nickel.
- **Van Arkel Method:** This method is used for refining zirconium (Zr). It involves the conversion of zirconium tetrachloride to zirconium metal through a chemical reaction with iodine.

3. **Match the refining methods with the metals:**
- (I) Liquation → (c) Sn
- (II) Zone Refining → (d) Ga
- (III) Mond Process → (b) Ni
- (IV) Van Arkel Method → (a) Zr

4. **Final Matching:**
- I → c (Sn)
- II → d (Ga)
- III → b (Ni)
- IV → a (Zr)

### Conclusion:
The correct matches are:
- Liquation → Sn
- Zone Refining → Ga
- Mond Process → Ni
- Van Arkel Method → Zr