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Question

Which of the following aromatic ring will NOT give positive test with KMnO4?

A
Toluene
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B
Benzene
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C
Mesitylene
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D
Cummene
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Solution

The correct option is B Benzene
Alkyl substituted benzene reacts with KMnO4 to get oxidised to benzoic acid whereas benzene will not give any such reaction.Eg:
623920_587732_ans.jpg

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