explain the following term corrosion and rancidity
Answers
The process in which layers of metals are depleted by the action of moist air is called corrosion. during corrosion of iron, iron metal is oxidized by the oxygen of air in the presence of water to form hydrated iron oxide. 4Fe + 3O2 + 2xH2O -----------» 2Fe2O3.xH2O When fats and oils comes in contact with moisture it changes it taste and coloured is known as rancidity. Hope it helps Thanks.
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Answer :
Corrosion – The process of slow conversion of metals into their undesirable compounds due to their reaction with oxygen, water, acids, gases etc. present in the atmosphere is called corrosion.
Rusting – Iron when reacts with oxygen and moisture forms red substance called rust.
Rancidity – The taste and odour of food materials containing fat and oil changes when they are left exposed to air for long time. This is called rancidity.
It is caused due to oxidation of fat and oil present in food material.
It can be prevented by using various methods such as by adding antioxidants to the food materials, Storing food in air tight container and by flushing out air with nitrogen.
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