Which of the Following is Not a Heterocyclic Aliphatic Amine

Question

Which of the following is not a heterocyclic aliphatic amine?
A) piperidine
B) pyrrolidine
C) pyrimidine
D) all of these

Accepted Answer

Pyrimidine is a heterocyclic aromatic amine, not aliphatic. Piperidine and pyrrolidine are both examples of heterocyclic aliphatic amines.