The chemical reaction involved in the corrosion of iron metal is that of :

46 The removal of oxygen from a substance is called: 47 In the context of redox reactions, the removal of hydrogen from a substance is known as: 49 The term used to indicate the development of unpleasant smell and taste in fat and oil containing foods due to aerial oxidation is: 50 In order to prevent the spoilage of potato chips, they are packed in plastic bags in an atmosphere of :