1.

Which of the following compounds reacts immediately with Lucas reagent ?A. `CH_(3)CH_(2)OH`B. `CH_(3)CH_(2)CH_(2)OH`C. `CH_(3)-underset(OH)underset(|)(CH)-CH_(3)`D. `CH_(3)-underset(OH)underset(|)overset(CH_(3))overset(|)(C)-CH_(3)`

Answer» Correct Answer - D
Lucas reagent is used to distinguish primary secondary or tertiary alcohols. Alcohols are soluble in Lucas reagent while their halides are immiscible and produces tubidity in solution.
In case of tertiary alcohols, turbidity is produced immediately as they from the halides easily Primary alcohols do not produce turbidity at room temperature.
(c) `underset((2^(@)))underset()(CH_(3)-overset(OH)overset(|)(CH)-CH_(3))underset(anhy.ZnCl_(2))overset(Conc.HCl+)tounderset("Turbidity appears in 5 min")(H_(3)C-overset(Cl)overset(|)(CH)-CH_(3))`
(d)`underset((3^(@)))(H_(3)C-underset(O)underset(|)overset(CH_(3))overset(|)(C)-CH_(3))underset("anhy.ZnCl"_(2) "(Lucas reagent)")overset("Conc.HCl") to underset("immediately")underset("Turbidity appears")(H_(3)C-underset(Cl)underset(|)overset(CH_(3))overset(|)(C)-CH_(3))+H_(2)O`
Thus, option(d) is correct


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