How many alcohols can give white turbidity immediately with $H C l +$ anhydrous $Z n C l_{2}$ ?

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Solution

Lucas test is perfomed to distinguish between $1^{o}, 2^{o}$ and $3^{o}$ alcohols. The alcohols react with reagent $Z n C l_{2} + H C l$ to form alkyl halide vis $S_{N} 1$ pathway. Those alcohols which generate stable carbocations, form instant turbidity.

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