Multiple choice

Which of these air pollutants has a characteristic pungent odour?

  1. Ammonia

  2. Chlorofluorocarbons

  3. Carbon monoxide

  4. Smog

  5. Methane
Reveal answer Fill a bubble to check yourself
A Correct answer
Explanation

Ammonia (NH3) - emitted from agricultural processes. Ammonia is a compound with the formula NH3. It is normally encountered as a gas with a characteristic pungent odour. Ammonia contributes significantly to the nutritional needs of terrestrial organisms by serving as a precursor to foodstuffs and fertilizers. Ammonia, either directly or indirectly, is also a building block for the synthesis of many pharmaceuticals. Although in wide use, ammonia is both caustic and hazardous.

Keep practicing — related questions