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Answer - Rancidity is a chemical process in which edible oils or fats get oxidized over a period of time and become inedible (unfit for human consumption) is called rancidity.

Answer - The chemical reactions in which oxidation and reduction takes place simultaneously are called redox reactions. ‘Red’ stands for reduction and ‘ox’ stands for oxidation

Answer - The chemical reaction in which an acid and alkali (base) react together to form salt and water is called neutralization. The resulting solution is neither acidic nor basic but is neutral. This reaction is known as neutralization reaction .