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प्रश्न
Name or state the following:
An atmospheric pollutant responsible for both global warming and ozone depletion.
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उत्तर
CH4 [methane].
APPEARS IN
संबंधित प्रश्न
You have been selected to talk on 'ozone layer and its protection" in the school assembly on 'Environment Day.'
(a) Why should ozone layer be protected to save the environment?
(b) List any two ways that you would stress in your talk to bring in awareness amongst your fellow friends that would also help in protection of ozone layer as well as the environment.
Name the group of chemical compounds which damages the ozone layer.
“Damage to the ozone layer is a cause of concern”. Justify this statement.
Why is ozone layer called ozone umbrella/shield?
Match the items in column I with the closely related ones in column II.
| Column I | Column II | ||
| (i) | Chlorofluorocarbons (CFCs) | (a) | Global warming |
| (ii) | Fly ash | (b) | Biodegradable |
| (iii) | Cow dung | (c) | Nuclear radiation pollutant |
| (iv) | CO2 and methane | (d) | Acid rain |
| (v) | Sulphur dioxide | (e) | Industrial waste |
| (vi) | Iodine-131 | (f) | Ozone depletion |
How is ozone formed in the upper atmosphere? State its importance. What is responsible for its depletion? Write one harmful effect of ozone depletion.
What is Ozone?
State how CFCs break ozone in the stratosphere.
Give reason for the following:
The formation of ozone involves a chemical reaction called photolysis.
Which of the following may be a conclusion of the excessive exposure of humans to sun’s ultraviolet rays?
- Peptic ulcers
- Eye disease like cataract
- Damage to lungs
- Skin cancer
