Which air pollutant is a colorless gas with an irritating odor,and mostly comes from human sources such as smelting?
A) nitric acid
B) ozone
C) nitrogen oxide
D) sulfur dioxide
E) carbon monoxide

Question

Which air pollutant is a colorless gas with an irritating odor,and mostly comes from human sources such as smelting?​
A) ​nitric acid
B) ​ozone
C) ​nitrogen oxide
D) ​sulfur dioxide
E) carbon monoxide​

Quizplus · Accepted Answer

Sulfur dioxide is a colorless gas with a pungent, irritating odor, primarily produced from human activities like smelting and burning fossil fuels.

Which Air Pollutant Is a Colorless Gas with an Irritating