Oil and fat containing food items are fl...

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

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Oil and fat containing food items are flushed with nitrogen because nitrogen acts as an antioxidant and it prevents them from being oxidised.

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(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 .

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.

Why do potato - chips manufactures fill the packest of chips with nitrogen gas ?

Define rancidity. To prevent rancidity of food containing oils and fats, some substances are added to them. What are these substances called ? some other methods to prevent rancidity.

When food containing fat or oil is not used and left for a long time, their smell and state changes. Name the process which is responsible for this change . List two methods to prevent or slow down the above change.

Name two biologically important compounds that contain both oxygen and nitrogen .

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