Which of the following reactions confirm the presence of unsaturation in benzene:
Correct answer: D. Oxidation by acidified KMnO₄
- A. Bromination in sunlight
- B. Catalytic oxidation
- C. Bromination with Fe and Br₂
- D. Oxidation by acidified KMnO₄
Explanation
Oxidation by acidified KMnO₄) - Correct: Acidified KMnO₄ decolorizes if benzene contains unsaturated side chains, confirming unsaturation.
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About Chemistry of Hydrocarbons
Hydrocarbons are studied through the structures and reactions of alkanes, alkenes, alkynes and aromatic compounds. Coverage includes free radical substitution in alkanes, electrophilic addition to carbon-carbon multiple bonds, benzene substitution, aromatic stability and the difference between addition reactions of alkenes and substitution reactions of benzene.
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