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

AcademicChemistryNCERTClass 10

Correct Answer: (d) Helium or nitrogen

Explanation: In order to store something for a longer period of time, the gases used should be less reactive in nature. Helium can be used as it is an inert gas. Nitrogen is less reactive and cheaper than Helium and is used in packaging to prevent rancidity. Also, Oxygen cannot be used as it is an oxidizing agent.

Updated on 10-Oct-2022 13:27:09