Advertisements
Advertisements
प्रश्न
Air has variable composition and hence there is ______ oxygen at lower altitudes than at higher altitudes.
Advertisements
उत्तर
Air has variable composition and hence there is more oxygen at lower altitudes than at higher altitudes.
APPEARS IN
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 |
Give two uses of the following component present in air:
nitrogen
What is air pollution?
Tick (√) the correct alternative from the choice given for the following statement.
Air consists of
Describe a simple experiment with the help of a diagram to show that Air exerts pressure
Water does not have a ______ but has definite ______ and ______.
What is global warming?
List five activities that are possible due to the presence of air.
Cool and soothing wind: Breeze.
uproot trees wind: ______.
Explain the following observations very briefly
A firki does not rotate in a closed area.
