Question
{ The solubility product of hydroxides of }Mg^{+2},Zn^{-2} , }} and Fet's decreases as }{K_{sp}Mg(OH)_2>K_{sp}Zn(OH)_2>K_{sp}Fe(OH)_3 The }} order of precipitation of hydroxides is:- }{(1)Fe(OH)_3,\quad Zn(OH_2,Fe(OH)_3}{(3)An(OH)_2,FeOH_3,Mg(OH)_2}{(4)Zn(OH)_2,Mg(OH)_2,FeOH_3