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Why does keeping food in an airtight container reduce rancidity?

Answer and explanation

Correct answer: Contact with oxygen decreases

Rancidity mainly results from oxidation of unsaturated oils and fats by oxygen in the air. An airtight container limits the entry and contact of oxygen, so the oxidation rate decreases and unpleasant smells and tastes develop more slowly. Thus option B is correct. Heating would generally speed many oxidation processes, while precipitation and conversion into metal have no connection with rancidity.

Related tags

RancidityOxidationFood PreservationChemical ReactionsChemical Reactions And EquationsChemical Substances – Nature And BehaviourChemical Substances Nature And BehaviourScience

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