When sodium nitroprusside is added to an alkaline solution containing sulfide ions,a ........ is obtained.

To a solution of a substance,gradual addition of ammonium hydroxide results in a black precipitate which does not dissolve in excess of $NH_4OH$. However,when $HCl$ is added to the original solution,a white precipitate is formed. The solution contained

Which of the following sulfides is completely precipitated upon dilution of its acidic solution?

$Fe^{2+}$ ion can be distinguished from $Fe^{3+}$ ion by

When $H_2S$ is passed through a mixture containing $Cu^{2+}$,$Ni^{2+}$,and $Zn^{2+}$ in an acidic solution,which ion will precipitate?

Sodium carbonate cannot be used in place of ammonium carbonate for the precipitation of the fifth group radicals because