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प्रश्न
Give balanced equations for formation of ozone molecules from oxygen molecules. What type of reaction takes place, during the formation.
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उत्तर
The reaction that takes place during the formation is photolysis or photo dissociation. Highly energetic UV from the sun break the O2 molecule in two atoms. Highly reactive O atom reacts with O2molecule to from ozone O3
\[\ce{O2->[U.V][light][O] + [O]}\]
[O] + O2 → O3 [ozone]
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संबंधित प्रश्न
What is the function of ozone in the upper atmosphere?
Write the full name of CFC.
O2 is converted into O3 by the action of :
(a) infrared radiations
(b) ultraviolet radiations
(c) gamma radiations
(d) cosmic radiations
Explain what is smog. Give its effects.
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 |
Name the chemicals responsible for destruction of the ozone layer. State the main chemical from these chemicals, which is responsible for more than 80% ozone depletion.
State the role of chlorofluorocarbons in ozone destruction or depletion [no equations required].
Global warming is a phenomenon related to ______.
Depletion of ozone is mainly due to
In 1987, the United Nations Environment Programme (UNEP) forged an agreement to freeze the production of a certain chemical to the year 1986 level. Name the chemical and the manufacturing companies m which this chemical was being mostly used.
In what way this chemical damage -
- the upper layers of the atmosphere and ultimately
- the organisms on the earth.
