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प्रश्न
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 ______.
विकल्प
Ozone; CFCs
CFCs; rays UV
CFCs; Ozone
UV rays; Diatomic oxygen
उत्तर
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 CFCs; Ozone.
Explanation:
The United Nations Environment Programme (UNEP), in order to stop the ozone layer from depleting, created the Montreal Protocol, which was finalised in 1987.
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संबंधित प्रश्न
Write the full name of CFC.
Which class of carbon compounds is responsible for the depletion of ozone layer at the higher level of the atmosphere?
Which compounds are responsible for the depletion of ozone layer?
Match the items in column I with the closely related ones in column II.
| Column l | Column lI | ||
| (i) | Chlorofluorocarbons (CFCs) | (a) | Global warming |
| (ii) | Fly ash | (b) | Biodegradable |
| (iii) | Cow dung | (c) | Nuclear radiation pollutant |
| (iv) | CO2 and methane | (d) | Acid rain |
| (v) | Sulphur dioxide | (e) | Industrial waste |
| (vi) | Iodine-131 | (f) | Ozone depletion |
True or False:
Ozone in the Troposphere is a harmful pollutant.
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 the role of chlorofluorocarbons in ozone destruction or depletion [no equations required].
Select the correct answer from the following statement:
The gas which in presence of U.V. light gives two atoms of the same gas.
Select the correct answer from the following statement:
A chemical responsible for ozone depletion.
Why was there a sharp in the amount of ozone in the atmosphere in 1980's.
