Chemistry Fundamental Principles of Organic Chemistry MDCAT 2015
PMDC Verified Question 76 of 83
The given three hydrocarbons are:

(I) (II)
A
Alicyclic hydrocarbons
B
Acyclic Hydrocarbons
C
Aromatic hydrocarbons
D
Heterocyclic hydrocarbons
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Aromatic hydrocarbons
Concept:

Hydrocarbons that contain one or more benzene rings (or adhere to Huckel's rule of aromaticity) are classified as aromatic hydrocarbons (arenes).

Solution:

  • The image depicts Benzene (1 ring), Naphthalene (2 fused rings), and Anthracene (3 fused rings).


  • All three of these compounds consist solely of carbon and hydrogen and contain delocalized pi-electron systems characteristic of benzene rings.


  • Therefore, they fall under the category of aromatic hydrocarbons.


Why other options are incorrect:

They are not acyclic (open-chain) or alicyclic (non-aromatic rings). They are not heterocyclic because they contain only carbon atoms in their rings.

Quality & Fidelity Assurance: Every question on BeambePrep is rigorously curated against the official PMDC syllabus with zero filler, zero out-of-syllabus content, and zero typos. When an authentic past paper originally contained a historical mistake or ambiguity from the examining board (such as UHS or NUMS), BeambePrep faithfully reflects the original paper while detailing the nuance and scientific consensus in the autopsy above.

Previous Question All Fundamental Principles of Organic Chemistry MCQs Next Question

Want to solve full-length papers under timed exam conditions?

Practice with zero-scroll lockdown sprints, dynamic latency zone timers, live peer selection telemetry, and the automated Amber mistake recovery loop.

Enter Arena Sprint iOS App Android App