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प्रश्न
Tabulate the various components of air, including the components with variable composition.
उत्तर
| Components of air | % By volume |
| 1. Main components Nitrogen Oxygen |
78 - 79% 21% |
| 2. Other components Carbon dioxide Water vapour |
0.02 - 0.03% Variable |
| 3. Rare gases Argon, helium, radon, krypton, xenon, neon |
Less than 1% |
| 4. Impurities Carbon monoxide, sulphur dioxide, oxides of nitrogen, hydrogen sulphide, dust particles. |
Variable |
Variation in composition of air:
- At high altitudes— The amount of oxygen is
Less – at high altitudes.
More – on the lower plains. - In deep seas — The amount of oxygen is-
Less – in deep seas and hence divers carry oxygen cylinders. - In industrial areas — The amount of impurities is-
More – in industrial and congested areas.
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