1.Sodium fusion extract, obtained from aniline, on treatment with iron (II) sulphate and H2SO4\text{H}_2\text{SO}_4H2SO4 in presence of air gives a Prussian blue precipitate. The blue colour is due to the formation ofa.Fe4[Fe(CN)6]3\text{Fe}_4[\text{Fe(CN)}_6]_3Fe4[Fe(CN)6]3b.Fe3[Fe(CN)6]2\text{Fe}_3[\text{Fe(CN)}_6]_2Fe3[Fe(CN)6]2c.Fe4[Fe(CN)6]2\text{Fe}_4[\text{Fe(CN)}_6]_2Fe4[Fe(CN)6]2d.Fe3[Fe(CN)6]3\text{Fe}_3[\text{Fe(CN)}_6]_3Fe3[Fe(CN)6]3Login to continueOnly logged in users canattempt or see the solution.