Question

when water and sulfur dioxide (primary pollutant) meet, sulfuric acid is formed. what type of pollutant is sulfuric acid?
secondary pollutant
primary pollutant

Explanation:

Secondary pollutants form when primary pollutants (like sulfur dioxide here) react with other substances (like water) in the environment, rather than being emitted directly. Sulfuric acid fits this definition as it is produced from a reaction of a primary pollutant, not released directly as a pollutant source.

Answer:

Secondary pollutant