Which of the following gives ketone on oxidation

Options

A. `(CH_(3))_(3)COH`
B. `CH_(3)CH_(2)CH_(2)OH`
C. `(CH_(3))_(2)CHCH_(2)OH`
D. `CH_(3)CH(OH)CH_(3)`

Answer

To determine which of the given compounds gives a ketone upon oxidation, we need to analyze the types of alcohols present in the options. Here’s a step-by-step solution:

### Step 1: Understand the Types of Alcohols
- **1° Alcohol (Primary Alcohol)**: An alcohol where the hydroxyl group (-OH) is attached to a carbon that is bonded to only one other carbon (or none).
- **2° Alcohol (Secondary Alcohol)**: An alcohol where the hydroxyl group is attached to a carbon that is bonded to two other carbons.
- **3° Alcohol (Tertiary Alcohol)**: An alcohol where the hydroxyl group is attached to a carbon that is bonded to three other carbons.

### Step 2: Identify the Oxidation Products
- **1° Alcohols**: Upon oxidation, they yield aldehydes.
- **2° Alcohols**: Upon oxidation, they yield ketones.
- **3° Alcohols**: They do not undergo oxidation because they lack alpha hydrogen atoms.

### Step 3: Analyze the Given Options
1. **Option 1**: A tertiary alcohol (3°) - This will not give a ketone upon oxidation.
2. **Option 2**: A primary alcohol (1°) - This will yield an aldehyde, not a ketone.
3. **Option 3**: Another primary alcohol (1°) - This will also yield an aldehyde, not a ketone.
4. **Option 4**: A secondary alcohol (2°) - This will yield a ketone upon oxidation.

### Step 4: Conclusion
Based on the analysis, the only option that gives a ketone upon oxidation is **Option 4**.

### Final Answer
**The correct answer is Option 4.**

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