The common name of the ore of iron whose chemical formula is Fe₃O₄.

1. Iron pyrites
2. Magnetite
3. Haematite
4. Spathic iron ore

The chemical name of the main ore of aluminium.

1. Aluminium fluoride
2. Aluminium oxide
3. Sodium aluminium fluoride
4. Hydrated aluminium oxide

The metallic oxide reduced to metal generally by thermal decomposition.

1. ZnO
2. MgO
3. HgO
4. Al₂O₃

Name the substance A to E, reacted with each reactant below to give the respective product/s.

1. $\text{Conc. iron pyrites} \xrightarrow{\text{A}} \text{Iron III oxide} + \text{Sulphur dioxide}$

2. $\text{Zinc oxide} \xrightarrow{\text{B}} \text{Zinc} + \text{Carbon monooxide}$

3. $\text{Copper [II] oxide} \xrightarrow{\text{C}} \text{Copper} + \text{Water}$

4. $\text{Impure bauxite} \xrightarrow{\text{D}} \text{Sodium aluminate}$

5. $\text{Sodium aluminate} \xrightarrow{\text{E}} \text{Aluminium hydroxide}$