Which of the following is the cationic detergent?

Options

A. Sodium stearate
B. Linear alkyl benzene sulphonate
C. Cetyltrimethylammonium chloride
D. All of the above

Answer

To determine which of the following is a cationic detergent, we need to understand the characteristics of cationic detergents and identify them from the given options.

### Step-by-Step Solution:

1. **Understand Cationic Detergents**:
- Cationic detergents are cleaning agents that carry a positive charge. They are similar to soaps but are more effective in certain conditions, especially in acidic environments.
- They are typically quaternary ammonium salts, which means they have a nitrogen atom bonded to four organic groups.

2. **Identify Common Examples**:
- A common example of a cationic detergent is cetyltrimethylammonium bromide (CTAB) or benzalkonium chloride. These compounds have a quaternary ammonium structure.

3. **Review Given Options**:
- Without specific options provided in the question, we can only infer that we need to look for compounds that fit the description of cationic detergents (quaternary ammonium salts).

4. **Select the Correct Option**:
- If one of the options is a quaternary ammonium salt, such as cetyltrimethylammonium chloride or any similar compound, that would be the cationic detergent.

5. **Conclude**:
- Based on the characteristics of cationic detergents and the examples provided, you would select the option that matches the description of a cationic detergent.