Aldehydes are isomeric with:

Formalin is an aqueous solution of

Identify which functional group is not present in the following molecule:-
$CH_3 - C(=O) - O - CH_2 - C(=O) - CH_2 - NH_2$

The $IUPAC$ name of the given compound is:

In the group $>C=O$,the carbonyl carbon is joined to other atoms by

Give the name and structure of the following compounds:
$(i)$ Methanal $(ii)$ Ethanal $(iii)$ $2$-Methylpropanal $(iv)$ $3$-Methylcyclohexanecarbaldehyde $(v)$ $2$-Methoxypropanal $(vi)$ Pentanal $(vii)$ Prop-$2$-enal $(viii)$ Benzene-$1,2$-dicarbaldehyde $(ix)$ $3$-Bromobenzaldehyde