Which of following will not produce benzaldehyde as major product?

 $\mathrm{X} \& \mathrm{Y}$ respectively is -

The product is

For the above sequence of reactions, identify the correct statements.
(a) $\mathrm{A}$ has more $\mathrm{pKa}$ than $\mathrm{D}$.
(b) $\mathrm{B}$ can be prepared by the deamination of m-toluidine.
(c) $\mathrm{A}$ and $\mathrm{D}$ show HVZ reaction.
(d) $\mathrm{A}$ can be prepared from $\mathrm{D}$ by reduction with ${\mathrm{H}}_2, {\mathrm{CuCr}}_2{\mathrm{O}}_4$.

Which is the incorrect statement regarding the above sequence of reactions?

Which is incorrect for the above reaction (ruling out all intermolecular aldol condensation reactions)?

(a)  The final product is 

(b) The process involves dehydration.

(c) ${\mathrm{LiAlH}}_4$ has no effect on the reaction.

(d) The final product on ozonolysis with ${\mathrm{O}}_3, \mathrm{Zn}, {\mathrm{H}}_2\mathrm{O}$ yields a dial compound.

The reaction of $\mathrm{R}-2-\mathrm{hydroxy} \mathrm{propanal}$ with $\mathrm{HCN}$ occurs in basic medium. Among the following statements, which ones are correct?

$\left(\mathrm{a}\right)$ The product formed is chiral and exist as a racemic mixture.

$\left(\mathrm{b}\right)$ Racemisation occurs at ${\mathrm{C}}_1$ of reactant as carbonyl group is a planar group.

$\text{(c) }$Product formed exists as diastereomers.

$\left(\mathrm{d}\right)$ Basic medium increase ionization of $\mathrm{HCN}$ and increases ${\mathrm{CN}}^{-}$ ,i.e., the nucleophile.