Name the substance obtained by the action of chlorine on dry slaked lime .

Options

A. Washing soda
B. Hypochloride
C. Baking soda
D. Bleaching powder

Explanation

To find the substance obtained by the action of chlorine on dry slaked lime, we can follow these steps:

### Step-by-Step Solution:

1. **Identify Dry Slaked Lime**:
- Dry slaked lime is chemically known as calcium hydroxide (Ca(OH)₂).

2. **Understand the Reaction**:
- When chlorine (Cl₂) reacts with dry slaked lime (Ca(OH)₂), it leads to the formation of a compound.

3. **Write the Reaction**:
- The reaction can be represented as:
\[ Ca(OH)_2 + Cl_2 \rightarrow Ca(OCl)_2 + H_2O \]
- Here, calcium hydroxide reacts with chlorine to form calcium oxychloride (Ca(OCl)₂) and water (H₂O).

4. **Identify the Product**:
- Calcium oxychloride (Ca(OCl)₂) is commonly known as bleaching powder.

5. **Conclusion**:
- Therefore, the substance obtained by the action of chlorine on dry slaked lime is **bleaching powder**.

### Final Answer:
The substance obtained by the action of chlorine on dry slaked lime is **bleaching powder**.