Chemistry - Nomenclature Question with Solution | TestHub

In secondary amine nitrogen is attached to $2^{\circ }$ carbon atom.

${\mathrm{MeNH}}_2,{\mathrm{Me}}_2\mathrm{NH},{\mathrm{Me}}_3\mathrm{N}$ are homologues of each other

${\mathrm{HCOOCH}}_3$ and ${\mathrm{CH}}_3{\mathrm{CH}}_2\mathrm{COOH}$ are homologues of each other

Isooctane has one $4^{\circ }$ carbon atom.