Explain the following terms with one example each.
(a) Corrosion
(b) Rancidity
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(a) Corrosion : When a metal is attacked by substances around it such as moisture, acids, etc., it is said to be corrode and this process is called corrosion.
Examples : black coating on silver, green coating on copper, etc.
(b) Rancidity : The oxidation of fats and oils when exposed to air is known as rancidity.
Examples : Bad smell and bad taste in chips packet.
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