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प्रश्न
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
उत्तर
chlorofluorocarbons
Chlorofluorocarbons emitted by air-conditioners, refrigerators and jet planes cause the depletion of the ozone layer.
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संबंधित प्रश्न
How depletion of the ozone layer affect living organisms?
Give one harmful effect of CFC.
With the help of a flow diagram, describe how energy from the sun flows through various trophic levels.
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
O2 is converted into O3 by the action of :
(a) infrared radiations
(b) ultraviolet radiations
(c) gamma radiations
(d) cosmic radiations
Number of Oxygen atom in Ozone.
State the role of chlorofluorocarbons in ozone destruction or depletion [no equations required].
Name or state the following:
The atom which reacts with oxygen to form ozone.
Long answer type question
Montreal protocol is an essential step. Why is it so?
A motor car, with its glass totally closed, is parked directly under the sun. The inside temperature of the car rises very high. Explain why?
