$CH_3-CO-CH_3 + [O] \xrightarrow{SeO_2} P + Se + H_2O$. What is $P$ here?

$A$ 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.

The product formed when hydroxylamine $(NH_2OH)$ condenses with a carbonyl compound is called:

One mole of an organic compound requires $0.5$ mole of oxygen to produce an acid. The compound may be

Which of the following is not formed as one of the products in the following reaction?

What is the possible product $(P)$ in the following reaction?