`{:(1." Separating miscible liquids", a." Filtration and evaporation"),(2." Separating immiscible liquids",b." Sedimentation, filtration and evaporation"),(3." Separating "CaCO_(3)" and NaCl",c." Separating funnel"),(4." Separating sand, saw dust and salt",d." Fractional distillation"):}`

Answer

To solve the question of matching the methods of separation with the appropriate mixtures, we can follow these steps:

### Step-by-Step Solution:

1. **Identify the first statement**:
- The first statement is about "Separating miscible liquids".
- **Matching Method**: The correct method for separating miscible liquids is **Fractional Distillation**.
- **Match**: 1 → d

2. **Identify the second statement**:
- The second statement is about "Separating immiscible liquids".
- **Matching Method**: The appropriate method for this is a **Separating Funnel**.
- **Match**: 2 → c

3. **Identify the third statement**:
- The third statement is about "Separating CaCO₃ and NaCl".
- **Matching Method**: This can be done through **Filtration and Evaporation**. First, filter to remove CaCO₃, then evaporate to obtain NaCl.
- **Match**: 3 → a

4. **Identify the fourth statement**:
- The fourth statement is about "Separating sand, sawdust, and salt".
- **Matching Method**: This involves **Sedimentation**, followed by **Filtration**, and finally **Evaporation** to separate the components.
- **Match**: 4 → b

### Final Matches:
1. Separating miscible liquids → d. Fractional distillation
2. Separating immiscible liquids → c. Separating funnel
3. Separating CaCO₃ and NaCl → a. Filtration and evaporation
4. Separating sand, sawdust, and salt → b. Sedimentation, filtration, and evaporation