$NaOH/H^{+}$ reacts with:

$3$-hydroxybutanal is formed when $(X)$ reacts with $(Y)$ in a dilute $(Z)$ solution. What are $X, Y$ and $Z$?

What is the product formed when propanal reacts with dilute sodium hydroxide?

Which of the following is the product of aldol condensation?

Which of the following compounds would not give tert-butyl alcohol when treated with excess methylmagnesium bromide $(CH_3MgBr)$ followed by acid?

An organic compound $X$ is oxidised by using acidified $K_2Cr_2O_7$ solution. The product obtained reacts with phenyl hydrazine but does not give the silver mirror test. The compound $X$ is,