Advertisements
Advertisements
प्रश्न
‘There is a hole in the ozone layer’. What do you understand by this?
Advertisements
उत्तर
The depletion of the ozone layer takes place due to two reactions between ozone and chlorofluorocarbons which are released from an aerosol spray can in air conditioners and refrigerators. The depletion is particularly marked over the Antarctic region. This has resulted in the formation of a large area of thinned ozone layer called the ozone hole.
APPEARS IN
संबंधित प्रश्न
With the help of a flow diagram, describe how energy from the sun flows through various trophic levels.
O2 is converted into O3 by the action of :
(a) infrared radiations
(b) ultraviolet radiations
(c) gamma radiations
(d) cosmic radiations
Explain what is smog. Give its effects.
Which of the following harmful radiation is absorbed by the ozone layer of the stratosphere?
Describe the methods of saving the ozone layer.
Name the chemicals responsible for destruction of the ozone layer. State the main chemical from these chemicals, which is responsible for more than 80% ozone depletion.
Give reason for the following:
The formation of ozone involves a chemical reaction called photolysis.
Why is ozone layer getting depleted at the higher levels of the atmosphere? Mention one harmful effect caused by its depletion.
In 1987, the United Nations Environment Programme (UNEP) forged an agreement to freeze the production of a certain chemical to the year 1986 level. Name the chemical and the manufacturing companies m which this chemical was being mostly used.
In what way this chemical damage -
- the upper layers of the atmosphere and ultimately
- the organisms on the earth.
In 1987, an agreement was formulated by the United Nations Environment Programme (UNEP) to freeze the production of “X” to prevent the depletion of “Y”. “X” and “Y” respectively referred to here are ______.
