Which of the following alcohols will give oily layer upon heating?
- 3-Methyl-2-butanol
- 2-Methyl-2-butanol
- 2-Butanol
- Ethyl alcohol
Explanation
The alcohol that will give an oily layer upon heating is 3-Methyl-2-butanol.
This is determined using the Lucas test, which distinguishes between primary, secondary, and tertiary alcohols based on their reaction time with the Lucas reagent (a mixture of concentrated hydrochloric acid and anhydrous zinc chloride).
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