Among the following,the compounds which can b | vedclass

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(A) The reaction described is a crossed Cannizzaro reaction. Compounds that lack $\alpha$-hydrogen atoms undergo this reaction in the presence of conc

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only $II$ and $V$

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(A) The reaction described is a crossed Cannizzaro reaction. Compounds that lack $\alpha$-hydrogen atoms undergo this reaction in the presence of concentrated $KOH$. Formaldehyde $(HCHO)$ acts as the reducing agent,being more reactive towards nucleophilic attack,and thus it gets oxidized to formate $(HCOO^-)$,while the other aldehyde is reduced to its corresponding alcohol. The compounds $II$ and $V$ are aldehydes that do not possess $\alpha$-hydrogens,allowing them to be reduced to alcohols by $HCHO$ in the presence of conc. $aq.$ $KOH$.

Among the following,the compounds which can be reduced with formaldehyde and conc. $aq.$ $KOH$ are $.....$

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