The salts of which alkaline earth metal are used in the form of manure

Options

A. Mg
B. Ca
C. Ba
D. Sr

Answer

To determine which alkaline earth metal salts are used in the form of manure, we can follow these steps:

### Step-by-Step Solution:

1. **Identify Alkaline Earth Metals**:
- The alkaline earth metals belong to Group 2 of the periodic table. They include:
- Beryllium (Be)
- Magnesium (Mg)
- Calcium (Ca)
- Strontium (Sr)
- Barium (Ba)
- Radium (Ra)

2. **Consider the Use of Salts in Agriculture**:
- In agriculture, certain salts of alkaline earth metals are used to improve soil quality and provide essential nutrients to plants.

3. **Focus on Calcium**:
- Among these metals, Calcium (Ca) is particularly significant. Calcium compounds, such as calcium hydroxide (Ca(OH)₂), are widely used in agriculture.

4. **Identify Calcium Compounds Used as Manure**:
- Calcium hydroxide (Ca(OH)₂), also known as slaked lime, is used to reduce soil acidity and improve pH levels, making it beneficial for crops.

5. **Conclusion**:
- Therefore, the salts of Calcium (Ca) are primarily used in the form of manure in agriculture.

### Final Answer:
The salts of Calcium (Ca) are used in the form of manure.

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