Question

It is recommended to use air tight container for storing oil for long time.

Answer 1

This is done so as to prevent it from getting exposed to air(oxygen). If it is exposed to air, it reacts with it and becomes rancid.
Thus, it is recommended to use air tight container for storing oil for long time, so as to prevent rancidity

Answer 2

1. Air , heat , light affects the quality of edible oil, which deteriorate through oxidation (Rancidity).

2. The oxidation process is greatly enhanced when edible oil is stored in containers that are not air tight and in areas where oil is exposed to air, heat and light.

3. Hence, it is recommended to use air tight containers for storing oil for a long time to prevent it from getting oxidised.

Thanks!!