Which of the following is/are present in air?
Air is a mixture of gases, water vapour and dust particles. The gases include nitrogen, oxygen, carbon dioxide, carbon monoxide, water vapour, etc.
Which of the following is the most abundant gas present in air?
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.