1.

Which of the following gases can be used for storage of fresh sample of an oil for a long time?(a) Carbon dioxide or oxygen(b) Nitrogen or oxygen(c) Carbon dioxide or helium(d) Helium or nitrogen

Answer»

The correct option is (d) Helium or nitrogen

  • 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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