Advertisements
Advertisements
प्रश्न
How is ozone formed in the upper atmosphere? State its importance. What is responsible for its depletion? Write one harmful effect of ozone depletion.
उत्तर
Ozone is a gas found in the atmosphere consisting of three oxygen atoms (O3). Ozone is formed in the atmosphere when energetic ultraviolet (UV) radiation dissociates molecules of oxygen (O2) into separate oxygen atoms. Free oxygen atoms can recombine to form oxygen molecules but if a free oxygen atom collides with an oxygen molecule, it joins up, forming ozone.
It absorbs the UV radiation emitted from the Sun and prevents them from reaching the surface of the earth. It is depleted when chlorinated compounds reach the stratosphere and are split when exposed to the UV rays. The reactive chlorine then reacts with ozone and cause its break down into oxygen molecules.
This depletion results in exposure of the earth's surface to the UV rays causing skin cancer incidents and harms to the plants.
APPEARS IN
संबंधित प्रश्न
You have been selected to talk on 'ozone layer and its protection" in the school assembly on 'Environment Day.'
(a) Why should ozone layer be protected to save the environment?
(b) List any two ways that you would stress in your talk to bring in awareness amongst your fellow friends that would also help in protection of ozone layer as well as the environment.
Which radiations are absorbed by ozone layer?
Give one harmful effect of CFC.
How is ozone formed in the higher level of atmosphere?
Which of the following harmful radiation is absorbed by the ozone layer of the stratosphere?
What is an ozone layer. State the distribution of the ozone layer in the stratosphere.
Give balanced equations for formation of ozone molecules from oxygen molecules. What type of reaction takes place, during the formation.
The problem caused due to ozone hole is ______.
Which of the following radiations is responsible for the conversion of atmospheric oxygen to ozone?
Why is ozone layer getting depleted at the higher levels of the atmosphere? Mention one harmful effect caused by its depletion.
