Question

Consider the given chemical reaction :

Product ''A'' is :

• A. picric acid
• B. oxalic acid
• C. acetic acid
• D. adipic acid

Answer 1

The Correct Option is D

The reaction of cyclohexane with potassium permanganate (\(\text{KMnO}_4\)) in an acidic medium (\(\text{H}_2\text{SO}_4\)) and heat results in the oxidation of cyclohexane to adipic acid.
Step 1: Oxidation of cyclohexane
Cyclohexane (\(\text{C}_6\text{H}_{12}\)) undergoes oxidation in the presence of \(\text{KMnO}_4\) and \(\text{H}_2\text{SO}_4\).
- The \(\text{KMnO}_4\) oxidizes the \(-\text{CH}_2-\) groups in cyclohexane to carboxylic acid (\(-\text{COOH}\)) groups.  
- This results in the formation of adipic acid (\(\text{HOOC} - (\text{CH}_2)_4 - \text{COOH}\)).
\[\text{C}_6\text{H}_{12} \rightarrow [\text{KMnO}_4, \text{H}_2\text{SO}_4, \text{Heat}] \text{HOOC} - (\text{CH}_2)_4 - \text{COOH} \, (\text{Adipic Acid})\]
Step 2: Conclusion  
The product \(A\) is adipic acid.
Final Answer: (4).

Answer 2

Step 1: Given reaction.
Cyclohexene is oxidized by hot acidic potassium permanganate (KMnO₄ + H₂SO₄ + heat).

Step 2: Nature of the reaction.
Hot, concentrated, acidic KMnO₄ is a strong oxidizing agent. It cleaves the carbon–carbon double bond of alkenes completely, converting both carbons of the double bond into carboxylic acid groups if possible.

Step 3: Apply oxidation on cyclohexene.
Cyclohexene (C₆H₁₀) contains a double bond within a six-membered ring. When oxidized under these strong conditions, the ring is cleaved at the double bond, and each carbon of the double bond is converted into a carboxylic acid (-COOH).

Step 4: Product formed.
Thus, the product formed is a dicarboxylic acid with six carbons — adipic acid (hexanedioic acid).

Step 5: Final Answer.
The product "A" is adipic acid.