The potassium ferrocyanide solution gives Prussian blue colour,when added to :

Match List-$I$ with List-$II$:

$A$. Haber process	$I$. Fe catalyst
$B$. Wacker oxidation	$II$. $PdCl_2$
$C$. Wilkinson catalyst	$III$. $[(PPh_3)_3RhCl]$
$D$. Ziegler catalyst	$IV$. $TiCl_4$ with $Al(CH_3)_3$

Choose the correct answer from the options given below:

Which ligand is used in the estimation of the hardness of water?

$CO$ (Carbon monoxide) is a neutral oxide of carbon,but it acts as a very strong field ligand and associates with metals to form complex compounds. These complex compounds are very useful in metallurgical processes. $CO$ is a poisonous gas because:

Assign $A$,$B$,$C$,$D$ from the given type of reaction.
$K_4[Fe(CN)_6] + ZnSO_4 \longrightarrow Zn_2[Fe(CN)_6] \downarrow + 2K_2SO_4$

When $CuSO_4$ solution is added to $K_4[Fe(CN)_6]$,the formula of the product formed is