(CH_3)_2C=CH-CH_3 (2-methylbut-2-ene) is treated with boiling KMnO_4 (or NaIO_4); the product is

JEE Main Chemistry question

(2-methylbut-2-ene) is treated with boiling KMnO (or NaIO); the product is

Answer: (A)

Vigorous (hot) KMnO cleaves the double bond oxidatively: the (CH)C= carbon (bearing two alkyl groups, no H) gives the ketone acetone

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Question ID VK-142373