Statement I: In Lassaigne's test, the organic compounds containing N and S elements undergo fusion with sodium metal. This forms sodium cyanide (NaCN) and sodium thiocyanate (NaSCN), which are ionic compounds. Hence, Statement I is true.
Statement II: The fusion of an organic compound containing N and S with sodium gives blood red colour with FeSO4 and Na4[Fe(CN)6] (not prussian blue colour). Hence, Statement II is false.
Thus, the correct answer is (4) Statement I is true but Statement II is false.
Among the following cations, the number of cations which will give characteristic precipitate in their identification tests with
\(K_4\)[Fe(CN)\(_6\)] is : \[ {Cu}^{2+}, \, {Fe}^{3+}, \, {Ba}^{2+}, \, {Ca}^{2+}, \, {NH}_4^+, \, {Mg}^{2+}, \, {Zn}^{2+} \]
\([A]\) (mol/L) | \(t_{1/2}\) (min) |
---|---|
0.100 | 200 |
0.025 | 100 |