Chemistry Fundamental Principles of Organic Chemistry ETEA 2024
PMDC Verified Question 11 of 83
Pyridine belongs to which class of organic compounds?
A
Alicyclic
B
Homocyclic
C
Heterocyclic
D
Hydrocarbon
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Heterocyclic
Concept:

If a ring structure contains at least one atom other than carbon (such as nitrogen, oxygen, or sulfur), it is classified as heterocyclic.

Solution:

  • Pyridine (\( \text{C}_5\text{H}_5\text{N} \)) is a six-membered aromatic ring.


  • Because one of the atoms forming the backbone of the ring is a Nitrogen atom (a heteroatom), the compound is strictly classified as heterocyclic.


Why other options are incorrect:

It is not homocyclic because it isn't an all-carbon ring. It is not a pure hydrocarbon because it contains a nitrogen atom.

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