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प्रश्न
Which is considered to be the earth’s protective umbrella? Why?
उत्तर
At high altitudes to the atmosphere consists of a layer of ozone (O3) which acts as an umbrella or shield for harmful UV radiations. It protects us from harmful effects such as skin cancer. UV radiation can convert molecular oxygen into ozone as shown in the following reaction.
\[\ce{O2(g) ->[uv] O(g) + O(g)}\]
\[\ce{O(g) + O2(g) ->[uv] O3(g)}\]
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संबंधित प्रश्न
Ozone depletion will cause ______.
Assertion (A): Oxygen plays a key role in the troposphere.
Reason (R): Troposphere is not responsible for all biological activities.
Which of the following statements is wrong?
Which of the following statements is correct?
Ozone is a toxic gas and is a strong oxidising agent even then its presence in the stratosphere is very important. Explain what would happen if ozone from this region is completely removed?
Ozone is a gas heavier than air. Why does ozone layer not settle down near the earth?
Assertion (A): Ozone is destroyed by solar radiation in upper stratosphere.
Reason (R): Thinning of the ozone layer allows excessive UV radiations to reach the surface of earth.
The statement that is not true about ozone is:
Polar stratospheric clouds facilitate the formation of ______.
