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प्रश्न
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.
उत्तर
Chemicals responsible for ozone depletion are: [CFCs] chlorofluoro carbons, CR,CL, CH3Br, CCl4, CH4 and nitrous oxide [N2O]
Main responsible chemical is chlorofluorocarbons CFCl, for 80% depletron.
State the man-made applications which make use of that chemical.
Man made application is coolant in refrigeration and A.C.’s
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संबंधित प्रश्न
Name the group of chemical compounds which damages the ozone layer.
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
Explain what is smog. Give its effects.
What is Ozone?
Fill in the Blanks:
______ is manmade compounds that have been widely used as refrigerants and in spray propellants and foam blowing.
How is the ‘ozone oxygen cycle’ maintained in the stratosphere and state what disturbs the balance, resulting in ozone depletion or destruction, Give balanced equation for the same.
State how CFCs break ozone in the stratosphere.
Long answer type question
Montreal protocol is an essential step. Why is it so?
Which of the following may be a conclusion of the excessive exposure of humans to sun’s ultraviolet rays?
- Peptic ulcers
- Eye disease like cataract
- Damage to lungs
- Skin cancer
What is exactly measured in Dobson units or DU?