Chlorine is mixed to water so that

Options

A. bacteria are killed
B. dirt is removed
C. water is cleaned
D. suspension is removed

Explanation

To solve the question "Chlorine is mixed to water so that", we need to analyze the options provided and understand the role of chlorine when added to water.

### Step-by-Step Solution:

1. **Understanding Chlorine's Role**: Chlorine is known for its disinfecting properties. It is commonly used in water treatment processes to kill bacteria and other pathogens.

2. **Analyzing the Options**:
- **Option A**: Bacteria are killed. This aligns with the known use of chlorine as a disinfectant.
- **Option B**: Dirt is removed. While chlorine can help in some cleaning processes, it is not primarily used for removing dirt.
- **Option C**: Water is cleaned. This is somewhat vague; while chlorine does help in making water safe, it is more specific to killing germs rather than cleaning in a general sense.
- **Option D**: Suspension is removed. Chlorine does not specifically target suspensions in water.

3. **Selecting the Correct Option**: Given the analysis, the most accurate statement regarding the purpose of adding chlorine to water is that it is used to kill bacteria. Therefore, the correct answer is **Option A**.

### Final Answer:
Chlorine is mixed to water so that **bacteria are killed** (Option A).

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