An example for anionic detergent is

Options

A. NaLS
B. CTAB
C. Trimethyl phosphate
D. All

Answer

### Step-by-Step Solution:

1. **Understanding Anionic Detergents**:
- Anionic detergents are surfactants that carry a negative charge on their hydrophilic (water-attracting) end. This property allows them to effectively remove dirt and grease.

2. **Common Characteristics**:
- Anionic detergents typically consist of sodium salts of sulfonated long-chain hydrocarbons. They are known for their excellent cleaning properties and are widely used in household and industrial cleaning products.

3. **Identifying Examples**:
- One of the most recognized examples of an anionic detergent is **sodium lauryl sulfate (SLS)**.
- Another example is **sodium dodecylbenzenesulfonate**.

4. **Chemical Structure of Sodium Lauryl Sulfate**:
- The chemical structure of sodium lauryl sulfate can be represented as CH3(CH2)10OSO3Na.
- It is derived from lauryl alcohol, which reacts with sulfuric acid and then neutralized with sodium hydroxide to form the sulfate.

5. **Conclusion**:
- Therefore, an example of an anionic detergent is **sodium lauryl sulfate**.

### Final Answer:
An example of anionic detergent is sodium lauryl sulfate.

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