In the context of redox reactions, the removal of hydrogen from a substance is known as:

45 Give one example of another reaction which is of the same type as the above reaction. 46 The removal of oxygen from a substance is called: 48 The chemical reaction involved in the corrosion of iron metal is that of : 49 The term used to indicate the development of unpleasant smell and taste in fat and oil containing foods due to aerial oxidation is: