Which one of the following on oxidation gies a benzoic acid?

Options

A. Primary alcohol
B. Secondary alcohol
C. Tertiary alcohol
D. All of these

Explanation

To determine which alcohol can be oxidized to form benzoic acid, we need to analyze the types of alcohols and their oxidation products.

### Step-by-Step Solution:

1. **Identify the Structure of Benzoic Acid**:
- Benzoic acid has the formula C6H5COOH, which consists of a benzene ring (C6H5) attached to a carboxylic acid group (COOH).

2. **Understand the Types of Alcohols**:
- **Primary Alcohol (1°)**: The hydroxyl (OH) group is attached to a carbon that is bonded to two hydrogen atoms.
- **Secondary Alcohol (2°)**: The OH group is attached to a carbon that is bonded to one hydrogen atom and two other carbon atoms.
- **Tertiary Alcohol (3°)**: The OH group is attached to a carbon that is bonded to three other carbon atoms.

3. **Oxidation of Alcohols**:
- **Primary Alcohols**: Upon oxidation, primary alcohols are converted to aldehydes and can be further oxidized to carboxylic acids (like benzoic acid).
- **Secondary Alcohols**: They are oxidized to ketones, which do not further oxidize to carboxylic acids.
- **Tertiary Alcohols**: They generally do not oxidize under normal conditions.

4. **Conclusion**:
- Since only primary alcohols can be oxidized to form carboxylic acids, we conclude that the alcohol that gives benzoic acid upon oxidation must be a primary alcohol.

### Final Answer:
- The alcohol that can be oxidized to give benzoic acid is a **primary alcohol**.