Science Answer the questions.[Che-2M]

1. Zinc oxide(s) and CO₂(g) are formed.

$\text{ZnCO}_3\text{(s)}\xrightarrow{\text{heat}}\text{ZnO(s) + CO}_2\text{(g)}$

2. Blister copper(s) and SO₂(g) are formed.

$2\text{Cu}_2\text{O(s) + Cu}_2\text{S(s)}\xrightarrow{\text{heat}}6\text{Cu(s) + SO}_2\text{(g)}$

1. Roasting:

$2\text{Zns(s) + 3O}_2\text{(g)}\xrightarrow{\text{heat}}2\text{ZnO(s) + 2SO}_2\text{(g)}$

2. Calcination:

$\text{ZnCO}_3\text{(s)}\xrightarrow{\text{heat}}\text{ZnO(s) + CO}_2\text{(g)}$​​​​​​​

$2\text{Na(s) + 2H}_2\text{O(l)}\rightarrow2\text{NaOH(aq) + H}_2\text{(g)}\\\ \ \ '\text{A}'\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ '\text{B}'$

$\text{Al}_2\text{O}_3\text{(s) + 2NaOH(aq)}\rightarrow2\text{NaAlO}_2\text{(aq) + H}_2\text{O(l)}\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ '\text{B}'\ \ \ \ \ \ \ \ \ \ \ \ \ \ \text{Sodium meta aluminate}\\\ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ \ '\text{C}'$