Question

How is ‘bad' ozone different from ‘good' ozone?

Answer 1

Hint: It is an allotrope of oxygen and also an inorganic molecule having a pungent smell. The later lies about 6 to 30 miles extended upwards while the former lies below it.
The molecule of ozone is less stable than the molecule of oxygen.

Complete answer:
Difference between bad ozone and good ozone

Bad ozone	Good ozone
It is formed at the ground level.	It is formed at an upper level of atmosphere.
It is formed in the troposphere region.	It is formed in the stratosphere region.
It is produced due to the increase in pollution because of vehicle and industrial emissions.	It is present naturally.
It causes severe health problems which may even lead to death.	It helps in protecting the earth by preventing the ultraviolet rays from reaching there.
It does not dissolve in water, thus creates problems during breathing and other processes.	It forms a protective covering around the surface of the earth.

Ozone dissolves in a nonpolar solvent instead of water. It absorbs most of the amount of sunlight and its ultraviolet radiation. It is used as an oxidant in many industries. It is one of the important greenhouse gases (ozone absorbs and releases the radiation resulting in warming). This warming of the earth’s surface due to the absorption of radiation is known as the greenhouse effect.

Note: The word ozone is derived from the Greek word ozein, meaning ‘smell’, it refers to the characteristic smell of the ozone. The ozone is the most common name under the IUPAC nomenclature. The smell of ozone was first noticed in 1785 by Martinus van Marum, a Dutch chemist through electrical sparking. In 1839, Christian Frederich Schonbein first recognized the pungent smell of ozone. In 1865, Jacques-Louis Soret described the formula of ozone.