Which of the following gases can be used for song of fresh sample of an oil for a long time
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Answer: Helium or nitrogen
Explanation:Because of Rancidity the food made with oil or sample of oil stored for long time gets spoiled. Makes the oil unfit for usage.
So to prevent from rancidity of oil , oil can be packed by flushing with unreactive gas like Nitrogen or Helium so that oil can be preserved for longer time.
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Answer:
Helium, as well as nitrogen, can be used for storage of a fresh sample of an oil for a long time because they abstain the oil from rancidity. The contact of air and oil is prevented by using nitrogen or helium as blanketing gas
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