An unknown alcohol is treated with the “Lucas reagent” to determine whether the alcohol is primary, secondary or tertiary. Which alcohol reacts fastest and by what mechanism:

Ortho–Nitrophenol is less soluble in water than p– and m– Nitrophenols because :

Phenol is heated with a solution of mixture of KBr and KBrO₃. The major product obtained in the above reaction is

From amongst the following alcohols the one that would react fastest with conc. HCl and anhydrous ZnCl₂, is