Chemistry Fundamental Principles of Organic Chemistry MDCAT 2018
PMDC Verified Question 68 of 83
Select one which is alcohol:
A
\( \text{CH}_3\text{--O--CH}_3 \)
B
\( \text{CH}_3\text{--CH}_2\text{--OH} \)
C
\( \text{CH}_3\text{COOH} \)
D
\( \text{CH}_3\text{--CH}_2\text{--Br} \)
Tap any option to test your recall and reveal the step-by-step Propolis autopsy.

Propolis Cognitive Error Autopsy

Official Correct Choice:
Option B: \( \text{CH}_3\text{--CH}_2\text{--OH} \)
Concept:

Alcohols are organic compounds characterized by the presence of one or more hydroxyl (\( \text{-OH} \)) functional groups attached to an aliphatic carbon atom.

Solution:

  • Option A is dimethyl ether (ether functional group).


  • Option B is ethanol, containing the \( \text{-OH} \) group attached to an alkyl chain. This is an alcohol.


  • Option C is acetic acid (carboxylic acid functional group).


  • Option D is ethyl bromide (alkyl halide).


Why other options are incorrect:

They represent different classes of organic compounds (ethers, carboxylic acids, and halides) rather than alcohols.

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