Oil and fat containing food items are flushed with nitrogen. Why?

(a) Write one equation each for decomposition reaction when energy is supplied in the form of : (i) heat , (ii) light. (b) Account for the following : (i) Paint is applied on iron articles. (ii) Oil and fat containing food items are flushed with nitrogen . (iii) When an iron nail kept in copper sulphate solution, blue colour of the solution fades and iron nail becomes brownish .

Oils and fats

Oils and fats are :

Name the term used to indicate the development of unpleasant smell and taste in fat and oil containing food due to oxidation . What are anti-oxidants ? Why are they added to fat and oil containing food.

Which term is used to indicate the development of unpleasant smell and taste in fat and oil containing foods due to aerial oxidation (when they are kept exposed for a considerable time) ?

What is the general name of the chemicals which are added to fat and oil containing foods to prevent the development of rancidity?