Question

What are different constituents of air.

Answer 1

1. Air is a mixture of nitrogen (N₂), oxygen (O₂), carbon dioxide (CO₂), water vapours (H₂O), and some other gases.
2. It also contains dust particles.
3. By volume, dry air contains 78.09% nitrogen, 20.95% oxygen, 0.93% argon, 0.04% carbon dioxide, and small amounts of other gases.
4. Air also contains a variable amount of water vapour, on average around 1% at sea level, and 0.4% over the entire atmosphere.