Bordeaux mixture consists of lime and

Options

A. `FeSO_4`
B. `CuSO_4`
C. `Cu(NO_3)_2`
D. `AgNO_3`

Explanation

**Step-by-Step Solution:**

1. **Identify the Components of Bordeaux Mixture:**
- The Bordeaux mixture is primarily composed of two key ingredients: lime and copper sulfate (CuSO4).

2. **Understanding Lime:**
- Lime refers to calcium hydroxide (Ca(OH)2), which is often used in agricultural practices.

3. **Chemical Reactions:**
- When lime (Ca(OH)2) reacts with copper sulfate (CuSO4), it forms copper hydroxide (Cu(OH)2) and calcium sulfate (CaSO4). The reaction can be represented as:
\[ Ca(OH)2 + CuSO4 \rightarrow Cu(OH)2 + CaSO4 \]

4. **Function of Bordeaux Mixture:**
- The Bordeaux mixture is used as a fungicide in vineyards and gardens to prevent fungal infections.

5. **Preparation of Bordeaux Mixture:**
- To prepare a Bordeaux mixture, a typical recipe involves mixing 1 kg of copper sulfate (CuSO4), 1 kg of lime (Ca(OH)2), and 10 liters of water to create a 10% solution.

6. **Conclusion:**
- Therefore, the Bordeaux mixture consists of lime and copper sulfate, and it serves as an effective fungicide.