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Question
Write the full name of CFC.
Solution
CFC: Chlorofluorocarbon
RELATED QUESTIONS
How is ozone formed in the higher level of atmosphere?
Which of the following harmful radiation is absorbed by the ozone layer of the stratosphere?
Match the items in column I with the closely related ones in column II.
| Column l | Column lI | ||
| (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 |
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The gas which in presence of U.V. light gives two atoms of the same gas.
Select the correct answer from the following statement:
A chemical responsible for ozone depletion.
Which spectrum of the light harmful to organism: ____________.
Gas A, found in the upper layers of the atmosphere, is a deadly poison but is essential for all living beings. The amount of this gas started declining sharply in the 1980s.
- Identify Gas A. How is it formed at higher levels of the atmosphere?
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What is exactly measured in Dobson units or DU?
