Give the products formed by the oxidation of hot `KMnO_(4)`.
`a.` Cyclobutene `b.` `1-` Methyl cyclobutene
`c.` `1,2-` Dimethyl cyclobutene

Explanation

To determine the products formed by the oxidation of hot KMnO4 for the given compounds (cyclobutene, 1-methyl cyclobutene, and 1,2-dimethyl cyclobutene), we will analyze each compound step by step.

### Step 1: Oxidation of Cyclobutene
1. **Structure of Cyclobutene**: Cyclobutene is a cyclic alkene with a double bond.
2. **Oxidation Reaction**: When cyclobutene is treated with hot KMnO4, the double bond is oxidized. The oxidation leads to the cleavage of the double bond and the formation of two carboxylic acid groups.
3. **Product Formation**: The product formed is butane-1,4-dioic acid (succinic acid). The structure can be represented as:
- HOOC-CH2-CH2-COOH

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