State true or False
In Down's process for the manufacture of sodium , `CaCl_(2)`, is added to increase its melting point.

Explanation

To determine whether the statement "In Down's process for the manufacture of sodium, CaCl₂ is added to increase its melting point" is true or false, we can analyze the role of calcium chloride (CaCl₂) in the process.

### Step-by-Step Solution:

1. **Understanding Down's Process**:
- Down's process is an industrial method used to produce sodium metal through the electrolysis of molten sodium chloride (NaCl).

2. **Melting Point of Sodium Chloride**:
- The melting point of pure sodium chloride (NaCl) is approximately 1080 K.

3. **Role of Calcium Chloride**:
- Calcium chloride (CaCl₂) is added to the molten NaCl in the Down's process.
- The primary purpose of adding CaCl₂ is to lower the melting point of the mixture.

4. **Effect of Calcium Chloride**:
- When CaCl₂ is added to NaCl, it decreases the melting point from 1080 K to about 815 K.
- This reduction in melting point is beneficial because it makes it easier to maintain the sodium in a molten state during the electrolysis process.

5. **Conclusion**:
- The statement claims that CaCl₂ is added to increase the melting point, which is incorrect.
- Therefore, the statement is **False**.

### Final Answer:
**False**