What do you observe when caustic soda solution is added to the following solution, first a little and then in excess :

(a) FeCl₃

(b) ZnSO₄

(c) Pb(NO₃)₂

(d) CuSO₄

Write balanced equations for these reactions.

What do you observe when freshly precipitated aluminum hydroxide reacts with caustic soda solution? Give balanced equation.

Distinguish by adding: Sodium hydroxide solution or ammonium hydroxide solution to

(a) Calcium salt solution and lead salt solution

(b) Lead nitrate solution and zinc nitrate solution

(c) Copper salt solution and ferrous salt solution

(d) Fe(II) salt solution and Fe(III) salt solution

(e) Ferrous nitrate and lead nitrate

How will you distinguish calcium nitrate and zinc nitrate solution?