The colour of tetrammine copper$(II)$ sulphate is

Aqueous solution of a metallic nitrate $X$ reacts with $NH_4OH$ to form $Y$,which dissolves in excess $NH_4OH$. The resulting complex is reduced by acetaldehyde to deposit the metal. $X$ and $Y$,respectively,are

Which of the following is considered as an anticancer species?

Ferric ion forms a Prussian blue precipitate due to the formation of

When $[Ti(H_2O)_6]Cl_3$ is heated at $250^{\circ} C$,the change in colour is from

When $FeCl_3$ reacts with $K_4[Fe(CN)_6]$,which of the following compounds is formed?