Advertisements
Advertisements
प्रश्न
State the meaning of the term Air
Advertisements
उत्तर १
Air is matter which occupies space, has mass, exerts pressure and is highly compressible.
उत्तर २
Air refers to the invisible, odorless, and tasteless mixture of gases that surrounds the Earth and forms its atmosphere. It is essential for life on Earth and supports various biological and physical processes.
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 |
What do you observe when Carbon dioxide gas is passed through lime water.
Write the chemical name of Lime water
Give two uses of the following component present in air:
nitrogen
State four steps to be taken to control air pollution.
Fill in the blank
Polluted air is harmful to ____.
Describe a simple experiment with the help of a diagram to show that Air has mass
Fill in the blank:
Rusting is a chemical reaction which involves _____ oxidation.
Take a squeezable bottle. Make a hole on the lid and close the bottle tightly. Bring the bottle near your face and press the bottle. What do you feel?
Match the following:
| 1. | Layer of air | a. | Hand fan |
| 2. | Electrical energy | b. | 21% |
| 3. | Nitrogen | c. | Windmill |
| 4. | Oxygen | d. | Atmosphere |
| 5. | Palm Trees | e. | 78% |
