NEET 2008 Chemistry question

A strong base can abstract an -hydrogen from

(1)Alkane
(2)Alkene
(3)Amine
(4)KetoneCorrect

Answer: (4)

Solution

The -hydrogens of a carbonyl compound are acidic (pKa about 20) because the carbonyl group withdraws electrons and the carbanion formed is resonance-stabilised as an enolate ion. Hence a strong base can remove an -hydrogen from a

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Question ID VK-090021