Chemistry Fundamental Principles of Organic Chemistry DUHS 2023
PMDC Verified Question 28 of 83
Organic compound are classified into:
A
Carbon compounds are non-carbon compounds
B
Open chain and closed chain compound
C
Homocyclic and heterocyclic compounds
D
Aromatic and cyclic compounds
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Open chain and closed chain compound
Concept:

The primary, highest-level classification of all organic compounds is based on the macroscopic structure of their carbon skeleton.

Solution:

  • All organic compounds are first broadly divided into two main categories:


  • 1. Acyclic or Open-chain compounds: (Aliphatic compounds) where carbons form linear or branched chains.


  • 2. Cyclic or Closed-chain compounds: Where carbon atoms form continuous rings.


  • All other classifications (like homocyclic, aromatic, etc.) are sub-categories of these two main branches.


Why other options are incorrect:

Options C and D refer to sub-classifications that apply only to cyclic compounds, ignoring the open-chain half of organic chemistry entirely.

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