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Question

The compound formed in the following reaction is called:

A
Vicinal diol
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B
Geminal diol
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C
Acetal
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D
Ketal
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Solution

The correct option is B Geminal diol
Nucleophilic addition mechanism of water to aldehyde:

1. Protonation of carbonyl group

2. Addition of nucleophile: Water molecule attack the electrophilic carbonyl carbon.

3. Deprotonation to form geminal diols
Hence,



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