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प्रश्न
What is air pollution?
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उत्तर
Air Pollution: “Mixing of UNWANTED and HARMFUL SUBSTANCES in the air is called AIR POLLUTION.”
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संबंधित प्रश्न
Mention the contribution of the following scientists :
- Antoine Lavoisier
- Robert Boyle
- Joseph Priestley
- Sir W. Ramsay
Discuss harmful effects of greenhouse effect.
Why can’t we see air?
What is wind?
Tick (√) the correct alternative from the choice given for the following statement.
Air consists of
Tick (√) the correct alternative from the choice given for the following statement.
Photosynthesis is a process in which plants
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
Describe a simple experiment with the help of a diagram to show that Air exerts pressure
What will happen if the amount of water vapour in the air increases.
The layer of air around the earth is known as ______.
