Packets of potato chips are filled with nitrogen gas. The main reason is to

stop the oil in the chips from being oxidised and turning rancidCorrect answerYour answeradd flavour to the chipsCorrect answerYour answermake the chips crisper by cooling themCorrect answerYour answerkill germs with a poisonous gasCorrect answerYour answer

Show the answer and explanation

CorrectNot quiteAnswer A

Correct answer: A

Oxygen in air slowly oxidises fats and oils, giving a bad smell and taste (rancidity).
Nitrogen is unreactive, so replacing the air with it keeps the chips fresh (and the gas cushions them).

Worth noting

Nitrogen is not poisonous; we breathe it in every breath, as it is about 78% of air.

Concept: Rancidity
Typical timeTypical: 60 s
Your timeYours: —

The rule this testsChemical reactions

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Packets of potato chips are filled with nitrogen gas. The main reason is to

Explanation