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What is the main scientific reason for filling chips packets with nitrogen gas?

Answer and explanation

Correct answer: To prevent oxidation of oil and reduce rancidity

Chips contain oil or fat, which can react with oxygen in air and become oxidised. This causes rancidity, producing an unpleasant smell and taste. Nitrogen is relatively unreactive; it reduces the amount of oxygen in the packet and thereby slows oxidation of the oil. Formation of a precipitate refers to separation of an insoluble solid from a solution, so it is not relevant here.

Related tags

ScienceClass 10Chemical ReactionsOxidationRancidityNitrogen Packaging

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