For lead poisoning,the antidote used is:

Copper $(II)$ ions give a reddish brown precipitate with potassium ferrocyanide. The formula of the precipitate is

Which of the following compounds is used as an anti-cancer agent?

Coordination compounds are of great importance in biological systems. In this context,which of the following statements is incorrect?

$K_4[Fe(CN)_6] + M^{x+}(aq.) \to M_4[Fe(CN)_6]_x \downarrow$
Which of the following cations does not respond to the above reaction?

In a complexometric titration of a metal ion with a ligand,the reaction is $M$ $(Metal-ion)$ + $L$ $(Ligand)$ $\to$ $C$ $(Complex)$. The end point is estimated spectrophotometrically (through light absorption). If '$M$' and '$C$' do not absorb light and only '$L$' absorbs,then the titration plot between absorbed light $(A)$ versus the volume of ligand '$L$' $(V)$ would look like: