Advertisements
Advertisements
Question
Give a brief account of the discovery of air and the scientists involved.
Advertisements
Solution
- 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.
RELATED QUESTIONS
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 |
Describe a simple experiment with the help of a diagram to show that Air has mass
The capacity of air to hold moisture depends upon the ______ of the air.
Name the important scientists and their studies which led to the discovery of the components of air.
Air has variable composition and hence there is ______ oxygen at lower altitudes than at higher altitudes.
Draw a neat labelled diagram for the following experiment.
To prove that oxygen is non-combustible, but supports combustion.
The composition of air is always exactly the same.
Do sailors need the help of wind to sail?
Wind does not help in the movement of which of the following?
Explain the following observations very briefly
The arrow of weather cock points towards a particular direction at a particular moment.
