Multiple choice general knowledge

1] The following pollutant is not contained in the vehicular exhaust emissions:

  1. Lead

  2. Ammonia

  3. Carbon monoxide

  4. 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.