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प्रश्न
Fill in the Blanks:
______ is manmade compounds that have been widely used as refrigerants and in spray propellants and foam blowing.
उत्तर
Chlorofluorocarbons is manmade compounds that have been widely used as refrigerants and in spray propellants and foam blowing.
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संबंधित प्रश्न
Fill in the following blank with suitable word :
Ultraviolet rays can cause skin..............
What are the causes of depletion of ozone layer? Which diseases are likely to be caused if the ozone layer will become thinner?
What is ozone?
How does ozone layer protect us from harmful effects in the environment?
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?
Is ozone depletion related to global warming?
The chemicals leading to the formation of ozone holes.
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.
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.
