Question

What is ground-level ozone primarily composed of?

1. Ground-level ozone (O3) is a significant constituent of smog.
2. Ground-level ozone is a primary component of acid rain.
3. Ground-level ozone is mainly composed of sulfur dioxide.

• A. 1, 2
• B. 2, 3
• C. 1 only
• D. 1, 3

Answer 1

Answer:

C. 1 only

• Ground-level ozone (O3) is a major component of smog.

• It is formed from photochemical reactions with pollutants such as volatile organic compounds, carbon monoxide and nitrogen oxides (NOx) emitted from vehicles, and industry.

• Due to the photochemical nature, the highest levels of ozone are seen during periods of sunny weather.

• ozone can also be generated by household equipment, such as portable air cleaners.