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

Identify the use of $EDTA$ from the following.

Which chelating ligand is used to remove excess $Cu$ poisoning in plants and animals?

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

The formation of a coordination compound can be detected by $............$.

Assign the correct code for Column-$I$ and Column-$II$:

Column-$I$ (Coordination compound)	Column-$II$ (Central metal atom)
$(a)$ Chlorophyll	$(p)$ Rhodium
$(b)$ Blood pigment	$(q)$ Cobalt
$(c)$ Wilkinson catalyst	$(r)$ Calcium
$(d)$ Vitamin $B_{12}$	$(s)$ Iron
	$(t)$ Magnesium