Chemistry Alcohols & Phenols SZABMU 2022
PMDC Verified Question 42 of 95
Both alcohols and phenols contain:
A
-OH group
B
-COOH group
C
\(-\text{CH}_3\) group
D
-CHO group
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option A: -OH group
Concept:

Functional groups dictate the classification of organic molecules.

Formula:

Not applicable to this conceptual question.

Solution:

  • An alcohol is characterized by a hydroxyl (-OH) group attached to an aliphatic carbon.


  • A phenol is characterized by a hydroxyl (-OH) group attached directly to an aromatic benzene ring.


  • The common, defining feature they share is the -OH group.


Why other options are incorrect:

-COOH is for carboxylic acids. -CHO is for aldehydes. Not all alcohols or phenols contain a methyl (\(-\text{CH}_3\)) group.

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.

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