Which of the following statements are correct ?

Options

A. Cationic detergents have germicidal properties
B. Bacteria can degrade the detergents containing highly branched chains
C. Some synthetic detergents can give foam even in ice cold water
D. Synthtic detergents are not soaps

Explanation

To determine which statements are correct, we will analyze each statement one by one.

### Step-by-Step Solution:

1. **Statement 1: Cationic detergents have germicidal properties.**
- Cationic detergents are indeed known for their germicidal properties. They are effective against bacteria and are often used in disinfectants. Therefore, this statement is **correct**.

2. **Statement 2: Bacteria can degrade the detergents containing highly branched chains.**
- This statement is incorrect. Bacteria generally struggle to degrade detergents that have highly branched chains. Most modern detergents are designed with branched chains, making them resistant to bacterial degradation. Thus, this statement is **wrong**.

3. **Statement 3: Some synthetic detergents can give foam even in ice cold water.**
- This statement is correct. Certain synthetic detergents are formulated to produce foam in cold water, which makes them versatile for various cleaning applications. Therefore, this statement is **correct**.

4. **Statement 4: Synthetic detergents are not soaps.**
- This statement is also correct. Synthetic detergents are made from petroleum products, while soaps are made from natural fats and oils. The difference in their composition means that synthetic detergents are indeed not classified as soaps. Hence, this statement is **correct**.

### Conclusion:
The correct statements are:
- Statement 1: Correct
- Statement 2: Wrong
- Statement 3: Correct
- Statement 4: Correct

Thus, the correct statements are 1, 3, and 4.