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Deffine rancidity and corrosion? |
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Answer» Corrosion - it is a process in which metal react to with substance present in atmosphere to formed surface compound. Corrosion of iron is called rusting. Rancidity- the process in which food get spoil due to oxidation especially during summer season is called rancidity When a food containing fat is kept outsides for sometime then it gets oxidised and give bad smell it is called rancidity.Corrosion: it is a process in which metals are eaten up gradually by the action of air ,moisture or chemicals on its surfaces.???? Corrosion:\xa0It 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 + 3H2O → Fe2O3 + 3H2Rancidity:\xa0When 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. For example when a when butter is kept open for a long time then its smell and taste gets changed. Rancidity- oil and fat containing article when kept for some time in open start giving bad smell and taste . We say that these articles have gone rancid. This phenomenon of reaction of atmospheric oxygen with oil and fat is called rancidity .Corrosion - metal are attacked by atmospheric oxygen , carbon dioxide and moisture and are converted into metal oxide and carbonates this phenomen is called corrosion . In the case of iron corrosion is called rusting. Rancidity is oxidation of fatty and oily food which results in bad smell and taste. Corrosion is the eating up of metal by air moisture or some chemical. Eg. Rusting of iron. Rancidity is a property when oily foods get oxidized and give an unpleasant smell and taste.when metals are exposed to air, moisture or acids to form a layer around them and are tarnished then it is called corrosion. |
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