Which test allows us to distinguish between the primary, secondary and tertiary alcohols?

Lucas test

The correct answer is option 1. Lucas test.

Lucas Test: It consists in treating the alcohols with Lucas reagent, i.e., mixture of concentrated hydrochloric acid and zinc chloride. Appearance of cloudiness in the reaction mixture will indicate the formation of alkyl chloride. A tertiary alcohol reacts immediately, a secondary alcohol reacts within five minutes and a primary alcohol does not react appreciably at room temperature.