The suspension milk of lime is composed of:

Options

A. `Ca(OH)_(2)`
B. `CaO`
C. `CaCl_2`
D. `CaSO_4`

Answer

To solve the question regarding the composition of the suspension known as milk of lime, we can follow these steps:

### Step-by-Step Solution:

1. **Understanding Milk of Lime**:
- Milk of lime is a suspension that is formed when calcium hydroxide is mixed with water.

2. **Identifying the Components**:
- The question provides four options:
- A) Calcium Hydroxide
- B) Calcium Oxide
- C) Calcium Chloride
- D) Calcium Sulphate

3. **Analyzing Each Option**:
- **Calcium Hydroxide (Ca(OH)₂)**: This is the main component of milk of lime. When calcium oxide reacts with water, it forms calcium hydroxide, which can exist in a suspended form in water.
- **Calcium Oxide (CaO)**: This is not the composition of milk of lime itself but is a precursor that reacts with water to form calcium hydroxide.
- **Calcium Chloride (CaCl₂)**: This compound does not relate to milk of lime and is soluble in water.
- **Calcium Sulphate (CaSO₄)**: This is also not related to milk of lime and does not form a suspension in the same way.

4. **Conclusion**:
- The correct answer is **Option A: Calcium Hydroxide**. This is because milk of lime is essentially a suspension of calcium hydroxide in water.

### Final Answer:
The suspension milk of lime is composed of **Calcium Hydroxide (Ca(OH)₂)**.

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