The major product formed in the following reaction is
(Structure of the reactant) $\xrightarrow[{CHCl_3}]{{PCC}}$

$A$ compound $(X)$ possesses a smell like bitter almond.
$(i)$ It does not give the Fehling test.
$(ii)$ It gives the silver mirror test.
$(iii)$ Compound $(X)$ gives orange precipitates of benzaldehyde $2,4-$dinitrophenylhydrazone with $2,4-DNP$.
Identify compound $(X)$ and provide its chemical reactions.

Which of the following statements is false?

The main reduction product of the following compound with $NaBH_4$ in methanol is

Identify $X, Y, Z$ in the following reaction sequence:

Clemmensen reduction involves the conversion of $ >C=O $ to $ >CH_2 $ in the presence of: