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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
Fill in the blank:
_____________ discovered the oxygen gas.
Why can’t we see air?
Give two uses of the following component present in air:
water vapour
Name two air pollutants which affect our health.
Tick (√) the correct alternative from the choice given for the following statement.
Air consists of
Describe a simple experiment with the help of a diagram to show that Air is highly compressible
A mixture has a variable composition. Give three other reasons why air is considered a mixture and not a compound.
Name the following.
Inert gases in the air
Fill in the blank:
A candle burns in a jar of oxygen, but gets extinguished in ______
Draw a neat labelled diagram for the following experiment.
To demonstrate the burning of sulphur in a jar of oxygen.
