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प्रश्न
What do you observe when a beam of light is allowed to enter in a closed dark room through a small hole.
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उत्तर
We will observe randomly moving dust particles in the beam of light. This confirms the presence of dust particles in the air.
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संबंधित प्रश्न
What is greenhouse effect?
Give two uses of the following component present in air:
water vapour
How is air useful to scooters and cars.?
State four steps to be taken to control air pollution.
Tick (√) the correct alternative from the choice given for the following statement.
Respiration
Give a brief account of the discovery of air and the scientists involved.
The composition of air is always exactly the same.
The process of conversion of iron into hydrated form of oxides is called _______.
List five activities that are possible due to the presence of air.
Wind does not help in the movement of which of the following?
