Rusting of iron involves a chemical reaction which is a combination of:
- Reduction as well as combination reactions
- Oxidation as well as combination reactions
- Reduction as well as displacement reactions
- Oxidation as well as displacement
Answer
- Oxidation as well as combination reactions
Explanation : The chemical reaction involved in rusting of iron is -
Iron + Oxygen + Water → Hydrated Iron Oxide
4Fe + 3O 2 + 2xH 2 O → 2Fe 2 O 3 .xH 2 O
It is an oxidation reaction as Iron gains Oxygen while forming Iron Oxide.
It is a combination reaction as more than 2 substances (Iron, Oxygen and Water) react to form a single product.
