Question:easy

Which from the following hydroxy compounds contain only one \(-\text{OH}\) group in a molecule?

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Count the OH groups: crotyl alcohol has one; glycol has two; pyrogallol has three; hydroquinone has two.
Updated On: Oct 1, 2026
  • Crotonyl alcohol
  • Ethylene glycol
  • Pyrogallol
  • Hydroquinone
Show Solution

The Correct Option is A

Solution and Explanation

Step 1: Method:
Decode each name into a structure and count OH.

Step 2: Counts:
Glycol is a diol, pyrogallol is a triol and hydroquinone is a diol. Crotyl alcohol is an unsaturated primary alcohol with one OH.

Step 3: Answer:
Option (A).

Final Answer:
Option (A). \[ \boxed{\text{(A) Crotonyl alcohol}} \]
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