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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.
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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
How depletion of the ozone layer affect living organisms?
The depletion of ozone layer in the upper atmosphere is mainly due to the emission of :
(a) unburnt hydrocarbons
(b) chlorofluorocarbons
(c) greenhouse gases
(d) ultraviolet radiations
Why is ozone layer called ozone umbrella/shield?
Explain what is smog. Give its effects.
Describe the methods of saving the ozone layer.
What is the difference between stratospheric and ground level ozone?
Select the correct answer from the following statement:
A chemical responsible for ozone depletion.
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
The substance which is chiefly responsible for the depletion of ozone layer is ______.
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 ______.
