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प्रश्न
What is meant by the term ‘atmosphere’? State the role played by the atmosphere for the survival of mankind.
उत्तर
A blanket of air around earth is called the atmosphere. Without an atmosphere, life would not be possible, as the atmosphere protects us from harmful gases. We could not live without the air present in the atmosphere. In the absence of the atmosphere, the earth would get so cold at night that we would not be able to survive. No \[\ce{CO2}\] and \[\ce{N2}\] for plants without atmosphere.
संबंधित प्रश्न
Mention the contribution of the following scientists :
- Antoine Lavoisier
- Robert Boyle
- Joseph Priestley
- Sir W. Ramsay
How is greenhouse effect produced?
How is air useful to agriculture?
Name two air pollutants which affect our health.
Name two air pollutants which cause acid rain.
Fill in the blank
Polluted air is harmful to ____.
Name the following.
Gases that are harmful to the ozone layer
Answer in your own words.
What are the various constituents of air? Write their uses.
Fill in the blank:
The gas evolved as a product of combustion as well as respiration is ______.
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?
