Select the incorrect matching of name of the following compound.

Options

A. , Picric acid
B. , Salicyclic acid
C. , Carbolic acid
D. , Isophthalic acid

Explanation

To solve the question of identifying the incorrect matching of names for the given compounds, we will analyze each option step by step.

### Step 1: Analyze the first compound - Picric Acid
- **Description**: Picric acid is a well-known compound with the chemical formula C6H3N3O7. It is a yellow crystalline solid that is used as an explosive and in dyeing.
- **Matching**: The name "Picric acid" is correctly matched with its structure.

**Hint**: Verify the chemical structure and common uses of the compound to confirm its name.

### Step 2: Analyze the second compound - Salicylic Acid
- **Description**: Salicylic acid is a colorless, bitter-tasting organic acid with the formula C7H6O3. It is used in the treatment of acne and as a pain reliever.
- **Matching**: The name "Salicylic acid" is correctly matched with its structure.

**Hint**: Look for the functional groups present in the compound to ensure the name corresponds to its structure.

### Step 3: Analyze the third compound - Carbolic Acid
- **Description**: Carbolic acid is another name for phenol, which has the formula C6H5OH. It is used as an antiseptic and in the production of plastics.
- **Matching**: The name "Carbolic acid" is correctly matched with phenol.

**Hint**: Remember that common names can often refer to the same compound; check for synonyms.

### Step 4: Analyze the fourth compound - Isothiolic Acid
- **Description**: Isothiolic acid is not a commonly recognized compound in organic chemistry. The name suggests a structure that does not correspond to any well-known acid.
- **Matching**: The name "Isothiolic acid" does not match with any standard compound, indicating it is likely incorrect.

**Hint**: Research the names of acids and their structures to identify any discrepancies.

### Conclusion
After analyzing all the compounds, we find that the incorrect matching is with "Isothiolic acid." Therefore, the answer to the question is:

**Answer**: Option D (Isothiolic acid is incorrectly matched).