Advertisements
Advertisements
प्रश्न
Give a brief account of the discovery of air and the scientists involved.
संक्षेप में उत्तर
Advertisements
उत्तर
- John Mayow (1674) proved air has two components – active and inactive components.
- Lavoisier (1789) named the active component as oxygen and inactive component as nitrogen
- Other scientists (1800's) discovered noble gases, \[\ce{CO2}\], water vapours.
shaalaa.com
क्या इस प्रश्न या उत्तर में कोई त्रुटि है?
संबंधित प्रश्न
Match the following :
| Column A | Column B |
| (a) Global warming | 1. Hydrated ferric oxide |
| (b) Acid rain | 2. Manganese dioxide |
| (c) Rust | 3. Carbon dioxide |
| (d) Catalyst | 4. Methane |
| (e) Photosynthesis | 5. Nitrogen Dioxide |
How is air useful to windmills?
Name two air pollutants which affect our health.
Name two air pollutants which cause global warming.
Name three greenhouse gases.
The capacity of air to hold moisture depends upon the ______ of the air.
Water does not have a ______ but has definite ______ and ______.
With whom should I pair up?
| Group A | Group B | ||
| (1) | Air | (a) | Excretion |
| (2) | Water | (b) | Scattering of light |
| (3) | Soil | (c) | Plasticity |
Cool and soothing wind: Breeze.
uproot trees wind: ______.
Explain the following observations very briefly
A firki does not rotate in a closed area.
