Chemistry Alcohols & Phenols NUMS 2019
PMDC Verified Question 69 of 95
Phenol reacts with \(\text{CH}_3\text{COCl}\) to give
A
Acid
B
Ester
C
Aldehyde
D
Ketone
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: Ester
Concept:

The reaction of an alcohol or a phenol with an acid chloride (acyl chloride) is an acylation reaction that yields an ester.

Formula:

$$ \text{C}_6\text{H}_5\text{OH} + \text{CH}_3\text{COCl} \longrightarrow \text{CH}_3\text{COOC}_6\text{H}_5 + \text{HCl} $$

Solution:

  • Phenol acts as a nucleophile, attacking the electrophilic carbonyl carbon of acetyl chloride (\(\text{CH}_3\text{COCl}\)).


  • The chloride ion is expelled as a leaving group.


  • The resulting functional group is an ester (phenyl acetate).


Why other options are incorrect:

Esters are strictly formed by the combination of an acyl group and an alkoxy/aryloxy group. Acid, aldehyde, and ketone functional groups do not match the product structure.

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 Alcohols & Phenols 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