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प्रश्न
Fill in the blank
Air is a ______ of gases
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उत्तर
Air is a mixture of gases
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संबंधित प्रश्न
Mention the contribution of the following scientists :
- Antoine Lavoisier
- Robert Boyle
- Joseph Priestley
- Sir W. Ramsay
Write the chemical name of The white insoluble solid formed on the reaction of carbon dioxide with lime water.
Give two uses of the following component present in air:
carbon dioxide
State two similarities and two differences between respiration and burning.
Answer in your own words.
What are the various constituents of air? Write their uses.
Fill in the blank:
Nitrogen of the air is utilized by plants for formation of _____.
Name a device which uses wind energy to generate electricity.
Air has no ______ & ______.
State whether the following statement is true or false. If false, correct them.
Air does not occupy any space.
Match the items of Column I with the items of Column II
| Column I | Column II | ||
| (a) | Weather cock | (i) | Gases and fine dust particles |
| (b) | Mountaineers | (ii) | Sailing yacht |
| (c) | Fine hair inside the nose | (iii) | Oxygen cylinders |
| (d) | Smoke | (iv) | Direction of air flow |
| (e) | Wind | (v) | Prevent dust particles |
