Which of the following gases can be used for the 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:D
Which of the following gases can be used for the 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
Explanation: Inert gases like helium or nitrogen both can be used for the storage of fresh sample of oil for a Long time, as they do not react with most elements, including oxygen. Thus these gases create an inert environment for the oil and prevent its reaction (oxidation) with any element in the environment. Hence, stopping it from becoming rancid.