JKSSB Sub Inspector of Police (JKPSI) 2022 — Q71 Solved Answer with Explanation

Question

Ozone is a gas made up of

1. A. four oxygen atoms
2. B. two oxygen atoms
3. C. three oxygen atoms (Correct answer)
4. D. five oxygen atoms

Correct Answer

Option C — three oxygen atoms

Detailed Solution & Explanation

Ozone (O3) is an allotrope of oxygen consisting of three oxygen atoms bonded together (a triatomic molecule). In the stratosphere, the ozone layer forms naturally when ultraviolet radiation breaks ordinary oxygen molecules (O2) into individual oxygen atoms, which then combine with other O2 molecules to form O3. This ozone layer absorbs most of the sun's harmful UV-B and UV-C radiation, protecting life on Earth. Ground-level ozone is a pollutant and constituent of smog.