Advertisements
Advertisements
प्रश्न
Name the important scientists and their studies which led to the discovery of the components of air.
Advertisements
उत्तर
Discovery of air:
- John Mayow (1674) proved air has two components – active and inactive components.
- Lavoisier (1789) named active component as oxygen and inactive component as nitrogen
- Other scientists (1800’s) discovered noble gases, C02, water vapours.
APPEARS IN
संबंधित प्रश्न
What is wind?
How is air useful to windmills?
Name two air pollutants which cause global warming.
Tick (√) the correct alternative from the choice given for the following statement.
Fuels which do not leave any residue on burning are
What will happen if the number of vehicles and factories in your surroundings increases?
What is the importance of air in transmission of sound?
Air has variable composition and hence there is ______ oxygen at lower altitudes than at higher altitudes.
The process of conversion of iron into hydrated form of oxides is called _______.
The layer of air around the earth is known as ______.
In the boxes of Column, I the letters of some words got jumbled. Arrange them in proper form in the boxes given in Column II
| Column I | Column II | ||
| (a) | \[\boxed{\text{D}}\]\[\boxed{\text{I}}\]\[\boxed{\text{L}}\]\[\boxed{\text{L}}\]\[\boxed{\text{M}}\]\[\boxed{\text{W}}\]\[\boxed{\text{I}}\]\[\boxed{\text{N}}\] | (a) | `squaresquaresquaresquaresquaresquaresquare square` |
| (b) | \[\boxed{\text{Y}}\]\[\boxed{\text{N}}\]\[\boxed{\text{O}}\]\[\boxed{\text{G}}\]\[\boxed{\text{X}}\]\[\boxed{\text{E}}\] | (b) | `squaresquaresquaresquaresquare square` |
| (c) | \[\boxed{\text{M}}\]\[\boxed{\text{E}}\]\[\boxed{\text{S}}\]\[\boxed{\text{K}}\]\[\boxed{\text{O}}\] | (c) | `squaresquaresquaresquaresquare` |
| (d) | \[\boxed{\text{T}}\]\[\boxed{\text{U}}\]\[\boxed{\text{D}}\]\[\boxed{\text{S}}\] | (d) | `squaresquaresquare` |
