Metallic zinc coated on iron to protect it from rusting illustrates the process called

1. Zinc is more reactive than iron and forms a protective adherent oxide layer. 2. Coating iron/steel with zinc to prevent rusting is called **galvanising**. 3. Liquation and annealing are refining/heat-treatment terms, not corrosion protection. _Source: Samacheer Kalvi Class 12 Chemistry Vol.1, Unit 1 'Metallurgy', §1.7 (Applications of Zn)_