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प्रश्न
The prime source of chlorofluorocarbons is ______.
विकल्प
Domestic sewage
Refrigeration equipment
Industrial effluents
Vehicular emissions
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उत्तर
The prime source of chlorofluorocarbons is refrigeration equipment.
Explanation:
Gaseous compounds, such as CFCs (chlorofluorocarbons), released from refrigerators, aerosol-sprayers and the packing material styrofoam, rise into the atmosphere.
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संबंधित प्रश्न
With the help of a flow diagram, describe how energy from the sun flows through various trophic levels.
What is ozone?
Which pollutant released into the air during refrigeration and airconditioning is the greatest contributor to the depletion of ozone layer?
(a) BHC
(b) DDT
(c) CFC
(d) UNEP
Which class of carbon compounds is responsible for the depletion of ozone layer at the higher level of the atmosphere?
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 |
Number of Oxygen atom in Ozone.
What is an ozone layer. State the distribution of the ozone layer in the stratosphere.
State the role of chlorofluorocarbons in ozone destruction or depletion [no equations required].
Give balanced equation for the following conversion [one or two steps].
A molecule of ozone to two molecules of oxygen gas.
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.
