Question

How can we obtain Oxygen gas from air?

Answer 1

Fractional distillation of liquid air. You need to be able to explain how nitrogen and oxygenare obtained from the air. You will recall that about 78% of the air is nitrogen and 21% is oxygen. These two gases can be separated by fractional distillation of liquid air.

Answer 2

we can obtain oxygen gas from air easily when we are standing near a tree and when we are breathing we can obtain oxygen