Multiple choice

Which of these air pollutants is not emitted by road transport?

  1. Nitric oxide

  2. Carbon Monoxide

  3. Ammonia

  4. Particulate matter

  5. Nitrogen dioxide
Reveal answer Fill a bubble to check yourself
C Correct answer
Explanation

Ammonia is a pungent, hazardous caustic gas. Agriculture, specifically livestock farming and animals waste is the main source of ammonia emissions.

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