Question:
\[ \text { Which of the following is NOT phenol? } \]
\[ \text { Which of the following is NOT phenol? } \]
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A phenol has the hydroxyl group attached directly to a carbon of the benzene ring.
Updated On: Nov 13, 2026
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The Correct Option is D
Solution and Explanation
Step 1: Understanding the Concept
A phenol has an OH group bonded directly to an aromatic ring carbon.
Step 2: Check each structure
(A) 2-nitrophenol has OH on the ring.
(B) 2-naphthol has OH on the naphthalene ring.
(C) 4-bromophenol has OH on the ring.
Step 3: Compare the options
(D) is benzyl alcohol, where the OH is on a CH2 group attached to the ring. It is an alcohol, not a phenol, so option (D) is correct.
Final Answer:
Benzyl alcohol is not a phenol because its OH is on a side-chain carbon. \[ \boxed{\text{(D) }\text{benzyl alcohol (C}_6\text{H}_5\text{CH}_2\text{OH)}} \]
A phenol has an OH group bonded directly to an aromatic ring carbon.
Step 2: Check each structure
(A) 2-nitrophenol has OH on the ring.
(B) 2-naphthol has OH on the naphthalene ring.
(C) 4-bromophenol has OH on the ring.
Step 3: Compare the options
(D) is benzyl alcohol, where the OH is on a CH2 group attached to the ring. It is an alcohol, not a phenol, so option (D) is correct.
Final Answer:
Benzyl alcohol is not a phenol because its OH is on a side-chain carbon. \[ \boxed{\text{(D) }\text{benzyl alcohol (C}_6\text{H}_5\text{CH}_2\text{OH)}} \]
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