Question

the sealed packets in which food items such as chips are sold are usually filled with nitrogen.
Why do u think that helps???

Answer 1

The manufacturer of chips fill plastic bags containing chips with nitrogen gas to prevent the chips from being oxidised and turn rancid.

Answer 2

because nitrogen prevants the chips from rancidity.. whereas if chips come into the contact of oxgen .. they get oxidised . and their taste changes .. and produces foul smell frm chips. so thats why , nitrogen is filled in the packets of chips in order to prevant them from becoming oxidised