A packet of potato chips is filled with nitrogen gas before sealing. What is the main reason for using nitrogen in the packet?
Nitrogen prevents oxidation of oils and fats
Potato chips contain oils and fats that react with atmospheric oxygen to become rancid, producing an unpleasant smell and taste.
Nitrogen gas is chemically inert and does not react with the oils in the chips, so filling the packet with nitrogen displaces the oxygen and prevents this oxidation process.
This keeps the chips fresh and crisp for a longer time without affecting their taste.
Hence, the correct answer is that nitrogen prevents oxidation of oils and fats.
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