Question

what is rancidity? Mention any 2 ways by which it can be prevented.

Answer 1

First I want to wish you a very happy new year now your answer is here
Rancidity is a term generally used to denote unpleasant odours and flavours in foods resulting from deterioration in the fat or oil portion of a food. Three different mechanisms of rancidity may occur. These are oxidative, hydrolytic, and ketonic.
Prevention are
Keep food in air tight container
Use refrigerator

Answer 2

rancidity the oxidation of fats and oils when exposed to air is known as rancidity it leads to bad smell and bad taste of food
1 by adding antioxidants
2 replacing air by nitrogen