Question

What are the two forms of oxygen found in the atmosphere?

• A. Molecular oxygen $\left(O_2\right)$
• B. Ozone $O_3$
• C. Oxygen radical (O)
• D. Tetra atomic oxygen $O_4$

Answer 1

Answer: (A), (B)

The correct options are
A Molecular oxygen $\left(O_2\right)$
B Ozone $O_3$

The two forms of oxygen found in the atmosphere are:
i) Molecular oxygen $\left(O_2\right)$
ii) Ozone $\left(O_3\right)$