Chemistry Alcohols & Phenols PMDC 2020
PMDC Verified Question 62 of 95
Phenol is known as:
A
Carpolic acid
B
Carbonlic acid
C
Carbolic acid
D
Carbolylic acid
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option C: Carbolic acid
Concept:

Historical trivial nomenclature often persists in industrial and medical contexts.

Formula:

Not applicable to this conceptual question.

Solution:

  • Phenol was first extracted from coal tar and was noted for its slightly acidic properties in aqueous solution.


  • Consequently, it was historically named carbolic acid.


Why other options are incorrect:

Options A, B, and D are misspelled distractors designed to sound similar. Carbonic acid (close to B) is \(\text{H}_2\text{CO}_3\), and carboxylic acid represents the -COOH functional group class.

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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