Sodium lauryl sulphate is a :

Options

A. Cationic sol
B. Anionic sol
C. Neutral sol
D. None of these

Answer

To determine the classification of sodium lauryl sulfate, we can follow these steps:

### Step 1: Understand the Composition of Sodium Lauryl Sulfate
Sodium lauryl sulfate (SLS) is a compound that consists of a long hydrocarbon chain and a sulfate group. The chemical formula for sodium lauryl sulfate is often represented as CH3(CH2)11OSO3Na.

### Step 2: Identify the Type of Detergent
Sodium lauryl sulfate is categorized as a detergent. Detergents can be classified into three main types: anionic, cationic, and non-ionic.

### Step 3: Analyze the Ionic Nature
In sodium lauryl sulfate, the "sodium" part indicates that it is a salt, and the sulfate group (OSO3) carries a negative charge. This negative charge characterizes it as an anionic detergent.

### Step 4: Confirm the Classification
Given that sodium lauryl sulfate has an anionic nature due to the negatively charged sulfate group, we can conclude that it is an anionic detergent.

### Conclusion
Thus, the correct answer to the question "Sodium lauryl sulfate is a:" is **anionic**.