Ethanal is warmed with dilute NaOH to give X. X is then hydrogenated with excess H2 over Ni at high pressure to give Y. Y is

JEE Advanced levelSingle correct optionDifficulty 3 of 3co090

Ethanal is warmed with dilute NaOH to give X. X is then hydrogenated with excess $H X_{2}$ over Ni at high pressure to give Y. Y is

Aldol condensation of ethanal on warming gives X = but-2-enal. Excess

H X_{2}

/Ni reduces both C=C and C=O. Y is

CH X_{3} CH X_{2} CH X_{2} CH X_{2} OH

, butan-1-ol.