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प्रश्न
List five activities that are possible due to the presence of air.
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उत्तर
- Respiration
- Photosynthesis
- Burning
- Movement of sailing yachts, gliders, parachutes, airplanes
- Generation of electricity by windmills
संबंधित प्रश्न
Fill in the blank:
_____________ discovered the oxygen gas.
Define the following:
Respiration
How is air useful to windmills?
State whether the following statement is ‘true’ or ‘false’. If false write the correct statement.
Air is a mixture and not a compound since the components of air cannot be separated by physical methods.
Answer in your own words.
What are the various constituents of air? Write their uses.
Water does not have a ______ but has definite ______ and ______.
Explain Lavoisier’s experiment which provided evidence to the discovery of components in air.
Mention two uses of air.
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?
About 78% of the volume of air is ______.
