Question:
In Dettol, chloroxylenol is one component. The IUPAC name of it is
In Dettol, chloroxylenol is one component. The IUPAC name of it is
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Remember:
\[
\text{Chloroxylenol}
=
4\text{-Chloro-}3,5\text{-dimethylphenol}
\]
A favourite NCERT fact-based question.
Updated On: Jun 22, 2026
- 4-Chloro-3,5-dimethylphenol
- 3-Chloro-4,5-dimethylphenol
- 4-Chloro-2,5-dimethylphenol
- 5-Chloro-2,3-dimethylphenol \bigskip
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The Correct Option is A
Solution and Explanation
Concept:
Chloroxylenol is a well-known antiseptic component present in Dettol.
Its molecular structure contains:
• One phenolic OH group
• One chlorine atom
• Two methyl groups
Step 1: Take phenol as the parent compound.
The OH group receives position 1.
Step 2: Locate chlorine and methyl substituents.
In chloroxylenol: \[ Cl \rightarrow 4^{th} \] position and methyl groups occur at \[ 3^{rd}, 5^{th} \] positions.
Step 3: Write the IUPAC name.
\[ \boxed{4\text{-Chloro-}3,5\text{-dimethylphenol}} \] \[ \boxed{\text{Answer = (A)}} \]
• One phenolic OH group
• One chlorine atom
• Two methyl groups
Step 1: Take phenol as the parent compound.
The OH group receives position 1.
Step 2: Locate chlorine and methyl substituents.
In chloroxylenol: \[ Cl \rightarrow 4^{th} \] position and methyl groups occur at \[ 3^{rd}, 5^{th} \] positions.
Step 3: Write the IUPAC name.
\[ \boxed{4\text{-Chloro-}3,5\text{-dimethylphenol}} \] \[ \boxed{\text{Answer = (A)}} \]
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