JEE Main Chemistry question

From amongst the following alcohols the one that would react fastest with conc. HCl and anhydrous is **[AIEEE 2010]**

(A)2-butanol
(B)2-methyl propan-2-olCorrect
(C)2-methylpropanol
(D)1 butanol

Answer: (B)

Solution

This is the Lucas test, whose reactivity follows carbocation stability: tertiary > secondary > primary. 2-Methylpropan-2-ol (tert-butyl alcohol) is tertiary and forms the most stable (tertiary) carbocation, so

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Question ID VK-148445