Pick the correct statements among the following :

Options

A. Sodium dodecylbenzene sulphonate used in tooth paste is a cationic detergents
B. Sodium lauryl sulphate forms an insoluble scum with hard water .
C. Cetyltrimethyl ammonium bromide cationic detergent used in hair conditioner
D. Nor-ionic detergents are formed when polyethylene glycol reacts with adipic acid .

Answer

To solve the question of identifying the correct statements among the provided options, we will analyze each statement one by one based on the information given in the video transcript.

### Step-by-step Solution:

1. **Statement 1: Sodium dodecylbenzene sulfonate used in toothpaste is a cationic detergent.**
- **Analysis:** This statement is incorrect. Sodium dodecylbenzene sulfonate is actually an anionic detergent, not a cationic one. Cationic detergents carry a positive charge, while anionic detergents carry a negative charge. Therefore, this statement is false.

2. **Statement 2: Sodium lauryl sulfate forms an insoluble scum with hard water.**
- **Analysis:** The video does not provide specific information about this statement, but it is known that sodium lauryl sulfate (SLS) can indeed react with calcium and magnesium ions present in hard water to form insoluble salts or scum. Thus, this statement is true.

3. **Statement 3: Cetyl trimethylammonium bromide is a cationic detergent used in hair conditioner.**
- **Analysis:** This statement is correct. Cetyl trimethylammonium bromide is a well-known cationic detergent that is commonly used in hair conditioners due to its ability to reduce static and improve the texture of hair. Therefore, this statement is true.

4. **Statement 4: Non-ionic detergents are formed when polyethylene glycol reacts with adipic acid.**
- **Analysis:** This statement is incorrect. Non-ionic detergents are typically formed from the reaction of polyethylene glycol with fatty acids such as stearic acid, not adipic acid. Therefore, this statement is false.

### Conclusion:
- **Correct Statements:**
- Statement 2: Sodium lauryl sulfate forms an insoluble scum with hard water. (True)
- Statement 3: Cetyl trimethylammonium bromide is a cationic detergent used in hair conditioner. (True)

### Final Answer:
The correct statements among the options provided are Statements 2 and 3.

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