Driving theory questions

This is an old question that is no longer in use.

Images may be missing and the information may be dated.

Go to the current theory test questions (2026) >>

Which alternative gives examples of substances that the Euro norm has established limits for?

  • Incorrect: Carbon dioxide and ozone.
  • Correct: Nitric oxide and harmful particles.
  • Incorrect: Hydrogen oxide and helium.

The limit values […] Nitric oxide (NOx) […] Particles”. (European Commission)

The Euro norm is a measurement for the car’s emissions of several substances that are harmful to the environment and to human health. However, the greenhouse gas carbon dioxide is not included in the criteria.” (Swedish Consumer Agency)


Körkortonline.se offers driving licence theory tests. This is an example of an explanation of a test question. English theory test (free demo), Swedish theory test (free demo).

More examples of explanations:

Category:



Buy all 1000 questions in English

Free demo »
Driving licence questions – practice theory tests online
  • All 1000 practice questions
  • Unlimited number of tests
  • Start practicing instantly
Swish, Visa, Mastercard