Acrolein is a/an......

Explain the common nomenclature of $(a)$ aldehyde compounds and $(b)$ ketone compounds.

The molecule having a formyl group is

The structures of cinnamaldehyde $(I)$,salicylaldehyde $(II)$,and vanillin $(III)$ are:

Find the correct molecular formulas for the following compounds: $(i)$ Propanone,$(ii)$ Propanal,and $(iii)$ $n$-Propanol.

Write the structures of the following compounds:
$(i)$ $\alpha$-Methoxypropionaldehyde
$(ii)$ $3$-Hydroxybutanal
$(iii)$ $2$-Hydroxycyclopentanecarbaldehyde
$(iv)$ $4$-Oxopentanal
$(v)$ Di-sec-butyl ketone
$(vi)$ $4$-Fluoroacetophenone