From amongst the following alcohols,the one t | vedclass

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(B) The reaction of alcohols with conc. $HCl$ and anhydrous $ZnCl_2$ (Lucas reagent) follows the $S_N1$ mechanism.The reactivity depends on the stabil

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$2-$Methylpropan$-2-$ol

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(B) The reaction of alcohols with conc. $HCl$ and anhydrous $ZnCl_2$ (Lucas reagent) follows the $S_N1$ mechanism.The reactivity depends on the stability of the carbocation formed.The order of reactivity is tertiary $(3^\circ)$ > secondary $(2^\circ)$ > primary $(1^\circ)$.$1.$ $2-$Methylpropan$-2-$ol $(CH_3-C(OH)(CH_3)-CH_3)$ is a tertiary alcohol and forms a stable tertiary carbocation,thus reacting fastest.$2.$ $2-$Butanol is a secondary alcohol.$3.$ $1-$Butanol and $2-$methylpropanol are primary alcohols.

From amongst the following alcohols,the one that would react fastest with conc. $HCl$ and anhydrous $ZnCl_2$ is:

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