Question:
What is the IUPAC name of hydroquinone?
What is the IUPAC name of hydroquinone?
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Hydroquinone is the para dihydroxy derivative of benzene.
Updated On: Nov 13, 2026
- Benzene-1,2-diol
- Benzene-1,3-diol
- Benzene-1,4-diol
- Benzene-1,3,5-triol
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The Correct Option is C
Solution and Explanation
Step 1: Understanding the Concept
Dihydroxybenzenes are named benzenediols, with locants showing the positions of the two OH groups.
Step 2: Identify the isomers
Catechol is the 1,2-isomer, resorcinol is the 1,3-isomer, and hydroquinone is the 1,4-isomer.
Step 3: Compare the options
Hydroquinone has the OH groups para to each other, so the name is benzene-1,4-diol, the third option.
Final Answer:
Hydroquinone is benzene-1,4-diol. \[ \boxed{\text{(C) }\text{Benzene-1,4-diol}} \]
Dihydroxybenzenes are named benzenediols, with locants showing the positions of the two OH groups.
Step 2: Identify the isomers
Catechol is the 1,2-isomer, resorcinol is the 1,3-isomer, and hydroquinone is the 1,4-isomer.
Step 3: Compare the options
Hydroquinone has the OH groups para to each other, so the name is benzene-1,4-diol, the third option.
Final Answer:
Hydroquinone is benzene-1,4-diol. \[ \boxed{\text{(C) }\text{Benzene-1,4-diol}} \]
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