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प्रश्न
What is wind?
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उत्तर
Fast-moving air is called wind.
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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:
oxygen
Mention five causes of air pollution.
Tick (√) the correct alternative from the choice given for the following statement.
Air pollution is due to the
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
What will happen if the amount of water vapour in the air increases.
State the meaning of the term atmosphere.
Air has variable composition and hence there is ______ oxygen at lower altitudes than at higher altitudes.
Complete the statement given below by filling in the blank with the correct word/s from the word/s given below
____________ is an example of a pollutant present in the air.
About 78% of the volume of air is ______.
