$(A)$ and $(B)$ in the following reaction sequence are:
$RR'C=O$ $\xrightarrow{HCN} (A)$ $\xrightarrow{B} RR'C(OH)CH_2NH_2$

Among the aromatic isomers with the molecular formula $C_8H_8O$,one isomer $X$ gives the iodoform test,while another isomer $Y$ gives the Benedict's test. What are the structures of $X$ and $Y$ respectively?

Provide the chemical conversion for the following:
$(i)$ $3-$phenylprop$-2-$enal from Benzaldehyde and Ethanal (Cross-Aldol Condensation).
$(ii)$ Benzyl alcohol from Benzene.

Predict the product when the given compound $(A)$ reacts with $NaBH_4$.

Which of the following statements are $TRUE$ about Haloform reaction?
$A$. Sodium hypochlorite reacts with $KI$ to give $KOI$.
$B$. $KOI$ is a reducing agent.
$C$. $\alpha, \beta$-unsaturated methylketone will give iodoform reaction.
$D$. Isopropyl alcohol will not give iodoform test.
$E$. Methanoic acid will give positive iodoform test.
Choose the correct answer from the options given below:

Which of the following represents the structure of the methyl hemiacetal of formaldehyde?