Cyclohexene is an unsaturated hydrocarbon with the molecular formula C6H10. When it is treated with concentrated potassium permanganate (KMnO4), a chemical reaction called oxidative cleavage occurs. This reaction breaks the double bond in cyclohexene and forms two carboxylic acid groups on each side of the double bond.

Here is a detailed explanation of the reaction and the compound produced:

Oxidative Cleavage Reaction:
The reaction between cyclohexene and concentrated KMnO4 is an example of oxidative cleavage. In this reaction, the double bond in cyclohexene is cleaved, and two new carbon-carbon single bonds are formed. The oxygen atoms from KMnO4 are added to the carbons previously involved in the double bond, resulting in the formation of carboxylic acid groups.

Steps of the Reaction:
1. The double bond in cyclohexene attacks one of the oxygen atoms in KMnO4, resulting in the formation of a cyclic intermediate.
2. The cyclic intermediate is then hydrolyzed by water, leading to the formation of two carboxylic acid groups.
3. The potassium permanganate is reduced in the process and changes color from purple to brown.

Compound Produced:
The compound produced when cyclohexene is treated with concentrated KMnO4 is adipic acid (option A). Adipic acid is a dicarboxylic acid with the molecular formula C6H10O4. It has two carboxylic acid groups (-COOH) attached to a hexane chain. Adipic acid is used in the production of nylon, polyurethane, and other polymers.

Overall Reaction Equation:
The overall reaction equation for the reaction between cyclohexene and concentrated KMnO4 can be represented as follows:

C6H10 + 2KMnO4 + 3H2O → C6H10O4 + 2MnO2 + 2KOH

In this equation, the cyclohexene is oxidized to adipic acid, and KMnO4 is reduced to MnO2.