`{:(,"List-I",,"List-II"),((P),R-X+R-ONararrR-O-R,(1),"Conant-Finkelstein reaction"),((Q),R-Cl+KlrarrRl,(2),"Williamsons synthesis"),((R),R-OHoverset(SOCl_(2))rarrR-Cl,(3),"Wurtz-Fittig reaction"),((S),C_(6)H_(5)-X+R-Xoverset(Na)rarrC_(6)H_(5)-R,(4),"Darzen's reaction"):}`

Options

A. `{:("P","Q","R","S"),(3,4,1,2):}`
B. `{:("P","Q","R","S"),(2,4,1,3):}`
C. `{:("P","Q","R","S"),(2,1,4,3):}`
D. `{:("P","Q","R","S"),(3,1,4,2):}`

Answer

To solve the given question, we need to match the reactions listed in List-I with their corresponding names in List-II. Let's analyze each reaction step by step.

### Step-by-Step Solution:

1. **Identify Reaction P:**
- Reaction: \( R-X + R-O^- \rightarrow R-O-R \)
- This reaction involves the formation of an ether from an alkyl halide and an alkoxide ion.
- **Name:** This is known as the **Williamson Ether Synthesis**.
- **Match:** P (1) → Williamson synthesis (2).

2. **Identify Reaction Q:**
- Reaction: \( R-Cl + KI \rightarrow R-I \)
- This reaction involves the substitution of chlorine with iodine using potassium iodide.
- **Name:** This is known as the **Conant-Finkelstein Reaction**.
- **Match:** Q (2) → Conant-Finkelstein reaction (1).

3. **Identify Reaction R:**
- Reaction: \( R-OH \overset{SOCl_2}{\rightarrow} R-Cl \)
- This reaction involves the conversion of an alcohol to an alkyl chloride using thionyl chloride.
- **Name:** This is known as **Darzen's Reaction**.
- **Match:** R (3) → Darzen's reaction (4).

4. **Identify Reaction S:**
- Reaction: \( C_6H_5-X + R-X \overset{Na}{\rightarrow} C_6H_5-R \)
- This reaction involves the coupling of an aryl halide with an alkyl halide in the presence of sodium, forming an aryl-alkyl compound.
- **Name:** This is known as the **Wurtz-Fittig Reaction**.
- **Match:** S (4) → Wurtz-Fittig reaction (3).

### Final Matches:
- P → (2) Williamson synthesis
- Q → (1) Conant-Finkelstein reaction
- R → (4) Darzen's reaction
- S → (3) Wurtz-Fittig reaction

### Summary of Matches:
- (P) → (2)
- (Q) → (1)
- (R) → (4)
- (S) → (3)