Question

Answer the following:
Which gas is formed in the upper layers of atmosphere by action of UV radiation?

Answer 1

We have to know that the ultraviolet is the form of electromagnetic radiation having the wavelength from $10nm - 400nm$.and its wavelength is shorter than the wavelength of visible light. But its wavelength is longer than the wavelength of x-rays. And this ultraviolet radiation is mainly present in the sunlight and a total ten percent of electromagnetic radiation comes out from the sun.

Complete answer:
We must have to know that the ozone is formed in the upper layers of the atmosphere by action of UV radiation. The ozone is otherwise known as trioxygen with chemical formula, ${O_3}$. And it is a pale blue color gas having a pungent smell. The ozone is formed in the atmosphere layer which is stratosphere by two step process. In the first stage, the solar ultraviolet radiation present in the sunlight will break and there is a formation of two separate oxygen atoms. There is an ozone layer which absorbs the most of the UV radiation and the layer contains a high concentration of ozone. And this ozone layer is present in the stratosphere to protect our life from very harmful ultraviolet radiation which is coming from the sun.

Note:
We must know that the formation of tropospheric oxygen is caused by the reaction of ultraviolet light which is present in the sunlight with nitrogen oxide and hydrocarbons and it is emitted by smokestacks and automobile tailpipes. This ozone will protect the living things which are present in the earth from UV radiation and this ozone is a highly reactive compound.