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  4. A mixture of benzaldehyde and formaldehyde on heating with aqueous NaOH solution gives main product has

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Q. A mixture of benzaldehyde and formaldehyde on heating with aqueous $NaOH$ solution gives main product has

NTA AbhyasNTA Abhyas 2022

Solution:

In Cannizaro reaction when formaldehyde reacts with other aldehydes lacking $\alpha $ -hydrogen, it is always oxidized and other aldehyde is reduced
$HCHO+C_{6}H_{5}CHO\underset{\Delta }{\overset{N a O H}{ \rightarrow }}HCOO^{-}Na^{+}+C_{6}H_{5}CH_{2}OH$