Give a reason why nitrogen is filled in food packets and not oxygen.

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Solution

Food material containing fat or oil when left for a long time becomes rancid i.e., smell and taste changes. This is because they get oxidized when they come in contact with atmospheric oxygen.
Nitrogen gas is filled in the food packets to prevent oxidation as the Nitrogen is nonreactive in nature.
It keeps the food fresh and preserved by reducing the bacterial growth in the food packages.

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