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प्रश्न
What is the difference between stratospheric and ground level ozone?
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उत्तर
Stratospheric ozone or good ozone is a layer surrounding the earth’s atmosphere. It protects all life on earth from the damaging effects of the sun’s rays. Ground level ozone is formed by a photochemical reaction between atmospheric oxygen (O2) and smog forming chemicals at the earth’s surface, it is odourless and colourless, but can have profound effects on the human respiratory system.
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संबंधित प्रश्न
Write the full name of CFC.
Fill in the following blank with suitable word :
Ultraviolet rays can cause skin..............
What step has been taken by UNEP in 1987 to prevent too much damage to the ozone layer?
Which of the following harmful radiation is absorbed by the ozone layer of the stratosphere?
Match the items in column I with the closely related ones in column II.
| Column l | Column lI | ||
| (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 |
State the chemicals responsible for ozone layer destruction.
Is ozone depletion related to global warming?
State how CFCs break ozone in the stratosphere.
Long answer type question
Montreal protocol is an essential step. Why is it so?
Gas A, found in the upper layers of the atmosphere, is a deadly poison but is essential for all living beings. The amount of this gas started declining sharply in the 1980s.
- Identify Gas A. How is it formed at higher levels of the atmosphere?
- Why is it essential for all living beings? State the cause for the depletion of this gas.
