(a) (i) Define corrosion. Under what conditions does corrosion take place? (ii) Give the formula and the chemical name of rust. (b) Give two methods to slow down rancidity.
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When some metals are exposed to moisture,acids etc.,they tarnish due to the formation of respective metal oxide on their surface.this process is called corrosion.keeping food in air tight containerd helps to slow down oxidation process.
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