Water is often treated with chlorine to

Options

A. remove hardness
B. increase oxygen content
C. kill gems
D. remove suspended particles

Answer

**Step-by-Step Solution:**

1. **Understanding the Question**: The question asks why water is often treated with chlorine. We need to analyze the options provided: removes hardness, increases oxygen content, kills germs, or removes suspended particles.

2. **Identifying the Role of Chlorine**: Chlorine is widely known for its disinfectant properties. It is used to eliminate harmful microorganisms from water.

3. **Disinfectant Properties**: Chlorine acts as a disinfectant by killing bacteria and other pathogens that can cause diseases. This is crucial for ensuring that drinking water is safe for consumption.

4. **Conclusion**: Based on its properties and the purpose of treating water, the correct answer is that water is treated with chlorine to **kill germs**.

5. **Terminology**: The process of adding chlorine to water is referred to as **Chlorination**.

**Final Answer**: Water is often treated with chlorine to kill germs.

---