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(A) Aldehydes that do not contain $\alpha$-hydrogen atoms undergo the Cannizzaro reaction when treated with concentrated alkali $(50 \% 	ext{ aq. } N

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$C_6H_5CHO$

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(A) Aldehydes that do not contain $\alpha$-hydrogen atoms undergo the Cannizzaro reaction when treated with concentrated alkali $(50 \% 	ext{ aq. } NaOH)$.In this reaction,one molecule of the aldehyde is reduced to the corresponding alcohol,while another is oxidized to the salt of the carboxylic acid.$C_6H_5CHO$ (benzaldehyde) lacks $\alpha$-hydrogen atoms and thus undergoes the Cannizzaro reaction:$2C_6H_5CHO + NaOH (50 \% 	ext{ aq.}) ightarrow C_6H_5CH_2OH + C_6H_5COONa$

Which one of the following on treatment with $50 \% \text{ aq. } NaOH$ yields the corresponding alcohol and salt of carboxylic acid?

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