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प्रश्न
State the role of chlorofluorocarbons in ozone destruction or depletion [no equations required].
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उत्तर
Roll of chlorofluorocarbons in ozone destruction : Chlorofluorocarbons are decomed by U.R. rays and liberate highly reactive free CF radical. This free ladical reacts with ozone to form Cl0[g]. This causes ozone depletion. The Cl free radicals initiate and catalyse a chain reaction – capable of breakdown of over 1,00,000 ozone molecules resulting in ozone depletion.
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संबंधित प्रश्न
Explain how, harmful ultraviolet radiations of sunlight are prevented from reaching the earth's surface.
Write the harmful effects of ozone depletion.
What step has been taken by UNEP in 1987 to prevent too much damage to the ozone layer?
The depletion of ozone layer in the upper atmosphere is mainly due to the emission of :
(a) unburnt hydrocarbons
(b) chlorofluorocarbons
(c) greenhouse gases
(d) ultraviolet radiations
Which of the following harmful radiation is absorbed by the ozone layer of the stratosphere?
‘There is a hole in the ozone layer’. What do you understand by this?
Ozone is abundant in this layer. Ozone heats this layer as it absorbs from incoming ultraviolet radiation from the sun:
Very short answer type question
Where was the ozone hole discovered?
Long answer type question
Montreal protocol is an essential step. Why is it so?
What is exactly measured in Dobson units or DU?
