Phenolic group can be identified by a positive:

Carbylamine Test-Identification of primary amines

Lucas Test - Differentiation between $1°,2°$ and $3°$ alcohols

Tollen's Test - Identification of Aldehydes

Phthalein Dye Test - Identification of phenols

Phenol on heating with phthalic anhydride in the presence of concentrated sulphuric acid forms a colourless condensation compound called phenolphthalein. On further reaction with dilute sodium hydroxide solution gives a pink colour fluorescent compound called fluorescein. Characteristic colours are produced by different phenolic compounds which can be viewed under white background.