Advertisements
Advertisements
प्रश्न
State how CFCs break ozone in the stratosphere.
Advertisements
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.
APPEARS IN
संबंधित प्रश्न
What is ozone?
The excessive exposure of humans to ultraviolet rays results in:
- damage to immune system
- damage to lungs
- skin cancer
- peptic ulcers
Explain ozone layer, its depletion and effects of ozone depletion.
Which of the following harmful radiation is absorbed by the ozone layer of the stratosphere?
The following picture depicts a certain phenomenon
- Name the phenomenon and explain it.
- Enlist the sources that are responsible for the above mentioned phenomenon.
- List out the effects of the above phenomenon on humans.
‘There is a hole in the ozone layer’. What do you understand by this?
Give Technical Terms:
The chemicals leading to the formation of ozone holes.
Select the correct answer from the following statement:
A chemical responsible for ozone depletion.
Why is ozone layer getting depleted at the higher levels of the atmosphere? Mention one harmful effect caused by its depletion.
World Ozone day is celebrated on ______.
