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प्रश्न
How are CFCs harmful?
उत्तर
CFCs refer to chlorofluorocarbons. They are generally used as aerosol propellants, refrigerants, shaving foams, spraying agent in scents, etc. They are very harmful, as they are types of ODS (ozone-depleting substances) that lead to the destruction or depletion of the ozone layer of the atmosphere.
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संबंधित प्रश्न
Give one harmful effect of CFC.
Write the harmful effects of ozone depletion.
How does ozone layer protect us from harmful effects in the environment?
What is UNEP?
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
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
How is ozone formed in the upper atmosphere? State its importance. What is responsible for its depletion? Write one harmful effect of ozone depletion.
Long answer type question
Montreal protocol is an essential step. Why is it so?
The substance which is chiefly responsible for the depletion of ozone layer is ______.
What is exactly measured in Dobson units or DU?
