An alkene 'A' undergoes acid-catalysed hydration to yield a major product 'B'. When 'B' is treated with Lucas reagent, it produces immediate turbidity at room temperature. Identify the alkene 'A'.

Step-by-step solution

The production of immediate turbidity with Lucas reagent (concentrated HCl and anhydrous ZnCl₂ ) at room temperature is a characteristic test for tertiary alcohols. Therefore, the major product 'B' must be a tertiary alcohol. Acid-catalysed hydration of alkenes follows Markovnikov's rule, where the OH group attaches to the more substituted carbon atom of the double bond. Let us evaluate the hydration products of the given alkenes: Propene yields propan-2-ol (a secondary alcohol). But-1-ene yields butan-2-ol (a seco