Sodium hydroxide solution is added to the solutions containing the ions mentioned in List 1.

List 1 —

1. Pb²⁺
2. Fe²⁺
3. Zn²⁺
4. Fe³⁺
5. Cu²⁺
6. Ca²⁺

The precipitates obtained are in list 2 —

A: Reddish brown
B: White insoluble in excess
C: Dirty green
D: White soluble in excess
E: White soluble in excess
F: Blue.

Match list 1 with list 2

Give balanced equations for —

(i) Zinc oxide dissolves in NaOH

(ii) Zinc is heated with NaOH solution

State one observation for:

1. Excess NH₄OH soln. is added to Pb(NO₃)₂
2. NaOH soln. is added to FeCl₃ soln. in excess.

State two relevant observations for the reaction:

Ammonium hydroxide solution is added to copper (II) nitrate solution in small quantities and then in excess.