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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.
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
Give two uses of the following component present in air:
water vapour
Define rusting?
How is air useful to agriculture?
Fill in the blank
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Describe a simple experiment with the help of a diagram to show that Air is highly compressible
Explain the term ‘air pollution’, with reference to air quality. State the sources of a few main pollutants.
Air has variable composition and hence there is ______ oxygen at lower altitudes than at higher altitudes.
Draw a neat labelled diagram for the following experiment.
To determine the component of air used up in burning, by using phosphorus and a bell jar.
The layer of air around the earth is known as ______.
Which of the following statements is incorrect?
