Question

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.

Answer 1

(a) The different constituents of air are gases, water vapour and dust particles.

(b) The most abundant gas present in the air is nitrogen gas (78%). The relative abundance of the oxygen gas present in the air is 21%.