Question:
Which of the following alcohols contains the hydroxy group, at the side chain of the aromatic ring?
Which of the following alcohols contains the hydroxy group, at the side chain of the aromatic ring?
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Alcohols are grouped by the carbon that carries OH; benzylic OH on a side chain is classed as aromatic.
Updated On: Oct 1, 2026
- allylic alcohol
- vinylic alcohol
- aromatic alcohols
- aliphatic alcohol
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
Alcohols are classified by the kind of carbon atom that holds the hydroxyl group. Aromatic alcohols have the OH on a side chain attached to the aromatic ring, for example benzyl alcohol, \(\text{C}_6\text{H}_5\text{CH}_2\text{OH}\).
Step 2: Why option (C) fits
In benzyl alcohol the ring carries a \(\text{CH}_2\) side chain and the OH is on that side chain carbon, not on the ring itself. So it is an aromatic alcohol.
Step 3: What the other types are
(A) Allylic alcohols have OH on a carbon next to a carbon-carbon double bond, as in \(\text{CH}_2\text{=CH-CH}_2\text{OH}\).
(B) Vinylic alcohols have OH directly on a double-bonded carbon, as in \(\text{CH}_2\text{=CH-OH}\).
(D) Aliphatic alcohols have OH on a saturated open-chain carbon, as in ethanol.
Final Answer:
An OH on the side chain of an aromatic ring defines an aromatic alcohol, option (C). \[ \boxed{\text{Aromatic alcohols}} \]
Alcohols are classified by the kind of carbon atom that holds the hydroxyl group. Aromatic alcohols have the OH on a side chain attached to the aromatic ring, for example benzyl alcohol, \(\text{C}_6\text{H}_5\text{CH}_2\text{OH}\).
Step 2: Why option (C) fits
In benzyl alcohol the ring carries a \(\text{CH}_2\) side chain and the OH is on that side chain carbon, not on the ring itself. So it is an aromatic alcohol.
Step 3: What the other types are
(A) Allylic alcohols have OH on a carbon next to a carbon-carbon double bond, as in \(\text{CH}_2\text{=CH-CH}_2\text{OH}\).
(B) Vinylic alcohols have OH directly on a double-bonded carbon, as in \(\text{CH}_2\text{=CH-OH}\).
(D) Aliphatic alcohols have OH on a saturated open-chain carbon, as in ethanol.
Final Answer:
An OH on the side chain of an aromatic ring defines an aromatic alcohol, option (C). \[ \boxed{\text{Aromatic alcohols}} \]
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