Advertisements
Advertisements
प्रश्न
Fill in the blank
Although we cannot see air, we can ___it.
Advertisements
उत्तर
Although we cannot see air, we can feel it.
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
Name two air pollutants which affect our health.
Tick (√) the correct alternative from the choice given for the following statement.
Photosynthesis is a process in which plants
Why is it said that-
Air is a homogeneous mixture of various gases.
What is the importance of air in transmission of sound?
Name the important scientists and their studies which led to the discovery of the components of air.
Draw a neat labelled diagram for the following experiment.
To determine the component of air used up in burning, by using phosphorus and a bell jar.
What is wind energy?
In a number of musical instruments, air plays an important role. Can you name some such instruments?
