JEE Main Chemistry question

ChemistryAldehydes, Ketones and Carboxylic AcidsJEE Main

A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives

Answer: (B)

Solution

Both benzaldehyde and formaldehyde lack α-hydrogens, so together they undergo a crossed Cannizzaro reaction. Formaldehyde, being more electrophilic (smaller, less hindered carbonyl) and thus the better hydride acceptor, is reduced to methanol while benzaldehyde is oxidized to benzoate —

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Question ID VK-149384