The most abundant constituent of air is _____.
Oxygen
Nitrogen
Water vapour
Impurities
The most abundant constituents of air is Nitrogen. The constituents of air are: Water vapour is also an important constituent which varies from region to region.
Q2. (a) What are the different constituents of air?
(b) Which is the most abundant gas present in the air? Give the relative abundance of the oxygen gas present in the air.