If formaldehyde and $KOH$ are heated,then we get

Compound $(C)$ is

Compare the rate of reaction toward Beckmann rearrangement for the given oxime derivatives where $\gamma$ is: $(i) CH_3COO^-$,$(ii) ClCH_2COO^-$,$(iii) PhSO_3^-$.

Upon treatment with $I_{2}$ and aqueous $NaOH$,which of the following compounds will form iodoform?

Schiff's reagent is

Which of the following compounds will react with water?