Explain the following terms with one example each (a) Corrosion, (b) Rancidity.
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Answer:
Corrosion: It is the process in which metals are slowly eaten up by the action of air moisture or chemicals.
Rancidity: When the substance containing oils and fats are exposed to air they get oxidised and become rancid due to which their smell, taste and colour change. This process is known as rancidity.
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Explanation:
Corrosion: It is the process in which metals are slowly eaten up by the action of air moisture or chemicals. For example rusting is a form of corrosion in which iron is eaten up by the action of air and moisture and a reddish brown coating of iron oxide is formed as shown in the following chemical reaction.
2fe+ 3H20 — Fe2O3 + 3H2
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