Question
Atmospheric life times of CFCs is typically in the range :
The correct answer is
50 - 102 years
CFC Atmospheric Lifetimes
Chlorofluorocarbons (CFCs) are chemical compounds known for their significant persistence in the Earth's atmosphere.
Typical Lifespan Range
The atmospheric lifetime of CFCs is considerably long, indicating how much time they spend in the atmosphere before being broken down.
Based on scientific assessments:
- The typical atmospheric lifetime for many common CFCs falls within the range of 50 to 102 years.
This long duration contributes to their environmental impact, particularly concerning ozone depletion and global warming.
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Important Questions from Ozone Layer Depletion
- Which of the following is a catalytically inactive (or reservoir) molecule containing chlorine in stratosphere?
- Choose the correct statement(s)
A. O$_3$ in stratosphere is not completely effective in shielding us from UV-B
B. UV-A is biologically least harmful.
C. Chapman mechanism deals with only O$_3$ formation in stratosphere.
D. Sunscreen lotions either reflect or absorb or scatter UV-B and UV-A
E. UV-B helps in dissociation of O$_3$ molecule in stratosphere.
Choose the correct answer from the options given below. Ozone layer depletion is a major phenomenon in :
- With regard to ozone depletion over Antarctica, select the false statement :
- The Wavelengths that are most important in the context of stratospheric ozone depletion are :
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