Nomenclature, Classification, Structure — Prelims Questions

Which of the following compounds is a secondary amine?

What is the correct IUPAC name for the compound $CH_3CH_2CH(CH_3)NH_2$?

Which of the following statements about the structure of amines is incorrect?

What is the IUPAC name for N,N-dimethylaniline?

Which of the following amines would exhibit pyramidal inversion?

What is the common name for $CH_3CH_2CH_2NH_2$?