Air is heavier than oxygen.
Hence, the given statement is false.
When a gas jar full the lower jar go upward into the jar containing air. In this experiment :
(a) air is heavier than bromine
(b) both air and bromine have the same density
(c) bromine is heavier than air
(d) bromine cannot be heavier than air because it is going upwards against gravity
Carbon dioxide is heavier than oxygen.