Polythyleneglycols are used in the preparation of which type of detergents ?

Options

A. Cationic detergents
B. Anionic detergents
C. Non ionic detergents
D. Soaps

Explanation

### Step-by-Step Solution:

1. **Understanding the Question**: The question asks about the type of detergents that utilize polyethylene glycols in their preparation. We need to analyze the options provided.

2. **Analyzing the Options**:
- **Cationic Detergents**: These detergents have a positively charged ion (cation) as their active component. An example is cetyl trimethyl ammonium bromide. While they are effective, they do not primarily use polyethylene glycols.

- **Anionic Detergents**: These detergents contain a negatively charged ion (anion) as their active part. An example is sodium lauryl sulfate. Similar to cationic detergents, they do not typically involve polyethylene glycols in their formulation.

- **Non-Ionic Detergents**: These detergents do not carry any charge. Polyethylene glycols are known to be uncharged and are commonly used in the formulation of non-ionic detergents. This makes them a strong candidate for our answer.

- **Soaps**: Soaps are a type of detergent but are typically made from fatty acids and do not involve polyethylene glycols in their preparation.

3. **Identifying the Correct Option**: Based on the analysis, the option that corresponds to the use of polyethylene glycols is **Non-Ionic Detergents**.

4. **Example of Non-Ionic Detergent Formation**: When stearic acid reacts with polyethylene glycol, a non-ionic detergent is formed. The reaction can be summarized as:
\[ \text{Polyethylene Glycol} + \text{Stearic Acid} \rightarrow \text{Non-Ionic Detergent} + \text{Water} \]
This indicates that polyethylene glycols are indeed used in the preparation of non-ionic detergents.

5. **Final Answer**: Therefore, the correct answer to the question is **Option 3: Non-Ionic Detergents**.