Assertion : Sodium-2 dodecyl benzenesulphonate is a detergent .
Reason : Detergent having highly branched chains are biodegradable.

Options

A. If both Assertion and Reason true but Reason is a correct explanation of Assertion .
B. If both Assertion and Reason true but Reason is not a correct explanation of Assertion .
C. If Assertion is true and Reason is wrong .
D. If Assertion is wrong and Reason is wrong .

Answer

To analyze the given assertion and reason, we can break it down into a step-by-step solution:

### Step 1: Understand the Assertion
The assertion states that "Sodium-2-dodecylbenzenesulphonate is a detergent."
- **Explanation**: Sodium-2-dodecylbenzenesulphonate is indeed a detergent. It is an anionic surfactant that is commonly used in cleaning products due to its ability to lower the surface tension of water, allowing it to mix with oils and grease, thus helping in the cleaning process.

**Hint**: Identify the chemical structure and properties of Sodium-2-dodecylbenzenesulphonate to confirm its role as a detergent.

### Step 2: Understand the Reason
The reason states that "Detergents having highly branched chains are biodegradable."
- **Explanation**: This statement is incorrect. Detergents with highly branched hydrocarbon chains are generally non-biodegradable. The branching in the molecular structure makes it difficult for bacteria to break down these compounds, leading to environmental pollution.

**Hint**: Consider the relationship between molecular structure (branching) and biodegradability in detergents.

### Step 3: Conclusion
- **Assertion**: True - Sodium-2-dodecylbenzenesulphonate is a detergent.
- **Reason**: False - Detergents with highly branched chains are not biodegradable.

### Final Answer
The assertion is correct, while the reason is incorrect. Therefore, the overall statement is that the assertion is true, and the reason is false.

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