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Which series of reactions correctly represents chemical reactions related to iron and its compound?

1. Fe dil. H2SO4→ FeSO4 H2SO4, O2→ Fe2(SO4)3 heat→ Fe
2. Fe O2, heat→ FeO dil. H2SO4→ FeSO4 heat→ Fe
3. Fe Cl2, heat→ FeCl3 heat, air→ FeCl2 Zn→ Fe
4. Fe O2, heat→ Fe3O4 CO, 600 °C→ FeO CO, 700 °C→ Fe

Correct answer: Fe O2, heat→ Fe3O4 CO, 600 °C→ FeO CO, 700 °C→ Fe

Solution

This option accurately depicts the reduction of iron oxides through a series of reactions involving heat and carbon monoxide, illustrating the transformation of iron from its oxide forms back to elemental iron.

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