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NEET levelSingle correct optionDifficulty 1 of 3o1062

During nucleophilic addition to a carbonyl group, the hybridisation of the carbonyl carbon changes from

A $s p^{3}$ to $s p^{2}$
B $s p^{2}$ to $s p^{3}$
C $s p$ to $s p^{2}$
D $s p^{2}$ to $s p$

Answer: B

The planar

s p^{2}

carbonyl carbon is attacked by the nucleophile and becomes the tetrahedral

s p^{3}

carbon of the alkoxide product.

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