Which of the following statement(s) is correct ?

Options

A. `AgNO_(3)` Produces a black Stain on Skin due to its reduction into matallic Silver.
B. `NH_(4)Cl` is a strong electrolyte, which decreases the ionization of `NH_(4)OH` by common ion effect so as to precipitate less soluble hydroxides of `AL^(3+),Cr^(3+),Fe^(3+)`
C. `Fe(OH)_(3)` and `AL(OH)_(3)` can not be separated by adding NaOH
D. A yellow precipitate is obtained on adding KI in aqueous solutions of `Pb^(2+),Ag^(+)`

Answer

C

Explanation

`Fe(OH)_(3)` and `Al(OH)_(3)` cannot be separated by adding NaOH.