In Libermann’s test,
- a Penol is treated with Br2/H2O and decolourisation is noted
- b Phenol is treated with neutral FeCl3 and formation of violet colour is noted.
- c Phenol is warmed with NaNO2 and con.H2SO4 and the product is made alkaline; the formation of blue or green colour is noted.
- d Phenol is treated with con.HNO3 and formation of yellow colour is noted.
Dear Student,
The correct answer is (c)
In Libermann test, phenol reacts with NaNO2 and conc. H2SO4 to give a product that turns green when made alkaline.
The correct answer is (c)
In Libermann test, phenol reacts with NaNO2 and conc. H2SO4 to give a product that turns green when made alkaline.