Question

which of the following gases can be used for Storage for fresh sample of an oil for a long time ?

a) carbon dioxide or oxygen
b) nitrogen or oxygen
c) carbon dioxide and helium
d) Helium or nitrogen ​

Answer 1

Answer:

d) helium or nitrogen

they are used to prevent rancidity. they prevent oxygen from coming in contact with the oil. therefore preventing oxidation of the oil.

Answer 2

Helium or nitrogen

It is not possible to use oxygen since it is an oxidizing agent. As it is an inert gas, helium may be used. Nitrogen is less reactive than helium, and it is cheaper. Nitrogen is most commonly used in packets to avoid rancidity.