Given below are two statements :
Statement I : Sulphanilic acid gives esterification test for carboxyl group.
Statement II : Sulphanilic acid gives red colour in Lassigne's test for extra element detection.
In the light of the above statements, choose the most appropriate answer from the option given below :

Options

A. Both Statement I and Statement II are correct
B. Both Statement I and Statement II are incorrect
C. Statement I is incorrect but Statement II is correct
D. Statement I is incorrect but Statement II is incorrect

Answer

To solve the question, we need to analyze both statements regarding sulfanilic acid.

### Step 1: Analyze Statement I
**Statement I:** "Sulphanilic acid gives esterification test for carboxyl group."

- **Explanation:** Sulfanilic acid has the following structure: it contains an amino group (-NH2) and a sulfonic acid group (-SO3H) attached to a benzene ring. Importantly, it does not contain a carboxyl group (-COOH). The esterification test is specifically used to detect the presence of a carboxyl group, which can react with alcohols to form esters. Since sulfanilic acid lacks a carboxyl group, it cannot undergo esterification.

**Conclusion for Statement I:** This statement is **incorrect**.

### Step 2: Analyze Statement II
**Statement II:** "Sulphanilic acid gives red colour in Lassigne's test for extra element detection."

- **Explanation:** Lassigne's test is used to detect the presence of certain elements in organic compounds, particularly nitrogen and sulfur. Sulfanilic acid contains both nitrogen (from the amino group) and sulfur (from the sulfonic acid group). When sulfanilic acid is subjected to Lassigne's test, it indeed produces a red color due to the presence of these elements.

**Conclusion for Statement II:** This statement is **correct**.

### Step 3: Final Conclusion
Based on the analysis:
- Statement I is incorrect.
- Statement II is correct.

### Answer
The most appropriate answer is that **Statement I is incorrect and Statement II is correct**.