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Q 20.     Explain the following terms with one example each.

    (a)      Corrosion 

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Corrosion is a process in which metals deteriorate due to chemical reaction with moisture ,air and chemicals.Rusting of iron is a major example of corrosion.Iron corrodes in presence of moisture and air.

4Fe+3O_2+H_2O\rightarrow 2Fe_2O_3.H_2O

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seema garhwal

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Explaon the following term with one example

rancidity

 

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vishakha

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