Which of the following is not an oxidation product of alkane?

Options

A. Alcohol
B. Aldehyde
C. Carboxylic acid
D. Ether

Explanation

To determine which of the following is not an oxidation product of alkane, we can analyze the oxidation process of alkanes step by step.

### Step-by-Step Solution:

1. **Understanding Alkane Oxidation**:
- Alkanes can be oxidized in the presence of nascent oxygen. The oxidation process typically involves several steps where the alkane is converted into different functional groups.

2. **First Oxidation Step**:
- When an alkane (RCH₃) is oxidized, the first product formed is an alcohol (RCH₂OH). This step introduces a hydroxyl group (-OH) to the structure.

3. **Second Oxidation Step**:
- Upon further oxidation of the alcohol (RCH₂OH), we obtain an aldehyde (RCHO). This step involves the conversion of the alcohol's hydroxyl group to a carbonyl group (C=O).

4. **Third Oxidation Step**:
- Continuing the oxidation process, the aldehyde (RCHO) can be oxidized to form a carboxylic acid (RCOOH). This step adds another oxygen atom to the carbonyl carbon, resulting in the carboxyl functional group (-COOH).

5. **Identifying Non-Oxidation Products**:
- In the oxidation sequence described, we have produced an alcohol, an aldehyde, and a carboxylic acid. However, we have not produced an ether. Ethers are characterized by the presence of an -O- group between two alkyl or aryl groups and are not formed through the oxidation of alkanes.

6. **Conclusion**:
- Therefore, the compound that is not an oxidation product of alkane is **ether**.

### Final Answer:
The compound that is not an oxidation product of alkane is **ether** (Option 4).

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