Question

UV radiation from sunlight produces?
A. Ozone
B. \[S{O_2}\]
C. \[CO\]
D. Fluorides

Answer 1

Hint: There is always a correlation between UV radiation and ozone gas. The UV radiation produces only a specific gas in the stratosphere and not many gases. The gas is also responsible for the increase in the global warming of earth.

Complete answer:
Option A Ozone: the oxygen molecules undergo polymerisation to form a three-atom molecule called ‘ozone’. When a normal oxygen molecule collides or interacts with nascent oxygen species it forms ozone molecules.
So, option A is correct.
Option B: \[S{O_2}\] is mainly released during combustion of fossil fuels and when mineral ores are smelted. Sulphur dioxide is also a harmful gas, which is the main cause for increasing the air pollution in the atmosphere. Sometimes it mixes up with rainwater and comes down in the form of sulfuric acid thus forming acid rain.
Option B is not correct.
Option C carbon monoxide \[\left( {CO} \right)\]: Carbon monoxide is mainly produced by the incomplete combustion of fossil fuels. It is formed due to partial or incomplete oxidation because of which instead of forming \[C{O_2}\], \[CO\] is formed. It is a major causative agent of air pollution and inhalation of high doses of \[CO\] may even lead to death.
Option C is not correct.
Option D Fluorides: fluorides are naturally occurring minerals in the earth’s crust and are found to some extent in the seawater. It is sometimes also present as organic or inorganic fluorides. It is not produced as a result of interaction with UV light.
Option D is not correct.

So, Option A is the correct answer.

Note:
The Ozone layer that is produced in the stratosphere acts as a blanket around our earth’s surface. It protects the earth from the harmful radiations and gases and thus prevents global warming too. These days because of increased air pollution the ozone layer is getting depleted day by day.