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प्रश्न
State how CFCs break ozone in the stratosphere.
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उत्तर
Depletion of 03 (ozone) by CFCs:
CFC [CFCl3 ] is broken by UV of sunlight to produce [Cl] atom or free radical [Cl] which highiy reactive in the atomic form and forms C10[g] with O2
\[\ce{CFCl3 ->[UV(Sum)] CFCl2 + Cl [atom]}\]
C l [g] + O3[g] → ClO[g] + O2[g]
This depletes ozone.
CIO further produces more [Cl] free radical
Cl0[g] + O[g] → Cl[g] O2[g] and destroys more of O3 and there by giving rise of ozone depletion.
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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.
Write the harmful effects of ozone depletion.
With the help of a flow diagram, describe how energy from the sun flows through various trophic levels.
How Ozone is Formed?
What is UNEP?
Which class of carbon compounds is responsible for the depletion of ozone layer at the higher level of the atmosphere?
Name the following pollutants:
Any two chemicals leading to the formation of ozone holes.
Give Technical Terms:
The chemicals leading to the formation of ozone holes.
Why was there a sharp in the amount of ozone in the atmosphere in 1980's.
What is exactly measured in Dobson units or DU?
