The aldehyde which react with $\mathrm{NaOH}$ to produce an alcohol and sodium salt is 

Formaldehyde and $\mathrm{NaOH}$ reacts to produce alcohol and sodium salt of an acid

$2\mathrm{HCHO}+\mathrm{NaOH}⟶\underset{\text{ Alcohol }}{{\mathrm{CH}}_3\mathrm{OH}}+\underset{\text{ Sodium formale }}{\mathrm{HCOONa}}$

This reaction is Cannizzaro's reaction