Multiple choice general knowledge 1] The following pollutant is not contained in the vehicular exhaust emissions: Lead Ammonia Carbon monoxide Particulate matter Reveal answer Fill a bubble to check yourself B Correct answer Explanation Ammonia is not typically found in vehicular exhaust - it's produced in industrial processes, not gasoline/diesel combustion. Lead (in older vehicles), carbon monoxide, and particulate matter are all actual vehicle exhaust pollutants.