Ripening of fruits can be carried out in presence of

Options

A. `Na_(2)SO_(4)`
B. `NaCl`
C. `CaCl_(2)`
D. `CaC_(2)`

Explanation

To determine which compound can be used for the ripening of fruits, we need to analyze the given options: Na2SO4, NaCl, CaCl2, and CaC2. The key to this question is the understanding that the ripening of fruits is facilitated by acetylene (C2H2).

### Step-by-Step Solution:

1. **Identify the Requirement for Ripening**:
- The ripening of fruits requires acetylene (C2H2). Therefore, we need to find which of the given compounds can produce acetylene upon hydrolysis.

2. **Analyze Each Compound**:
- **Na2SO4 (Sodium Sulfate)**:
- This compound does not contain carbon. Therefore, it cannot produce acetylene upon hydrolysis.
- **NaCl (Sodium Chloride)**:
- Similar to Na2SO4, NaCl does not contain carbon and cannot produce acetylene upon hydrolysis.
- **CaCl2 (Calcium Chloride)**:
- CaCl2 also lacks carbon in its structure, meaning it cannot yield acetylene upon hydrolysis.
- **CaC2 (Calcium Carbide)**:
- This compound contains carbon. When calcium carbide reacts with water, it produces acetylene (C2H2) and calcium hydroxide (Ca(OH)2).

3. **Reaction of Calcium Carbide with Water**:
- The reaction can be represented as:
\[ \text{CaC}_2 + 2\text{H}_2\text{O} \rightarrow \text{Ca(OH)}_2 + \text{C}_2\text{H}_2 \]
- This shows that calcium carbide can indeed produce acetylene when it reacts with water.

4. **Conclusion**:
- Since only calcium carbide (CaC2) can produce acetylene, it is the correct answer for the question regarding which compound can be used for the ripening of fruits.

### Final Answer:
- The correct compound that can be used for the ripening of fruits is **CaC2 (Calcium Carbide)**.