Advertisements
Advertisements
प्रश्न
Write the full name of CFC.
उत्तर
CFC: Chlorofluorocarbon
संबंधित प्रश्न
How depletion of the ozone layer affect living organisms?
Name the group of chemical compounds which damages the ozone layer.
Give one harmful effect of CFC.
The excessive exposure of humans to ultraviolet rays results in:
- damage to immune system
- damage to lungs
- skin cancer
- peptic ulcers
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 |
Describe the methods of saving the ozone layer.
Name or state the following:
An atmospheric pollutant responsible for both global warming and ozone depletion.
Name or state the following:
The atom which reacts with oxygen to form ozone.
The substance which is chiefly responsible for the depletion of ozone layer is ______.
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?
- Why is it essential for all living beings? State the cause for the depletion of this gas.
