1.

i) How is corrosion is different from rusting of metals.

Answer»

Corrosion and rusting are two chemical processes, which result in disintegration of materials.

--Corrosion is the layer-by-layer spoiling or degrading of any metallic surface through such agents as oxygen, water vapour, hydrogen sulfide and other possible pollutants.

--Rusting is merely a specific case of corrosion where the metal surface concerned is iron and the red-brown flakes of Fe2O3.nH2O that form are what is calledrust.

When a metal reacts with external environment its structure will be deteroited and break down into small pieces.Rusting in a chemical process which is common with all metals containing iron.



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