Should the airbag on the front passenger seat be activated if a rear-facing child seat is installed there?
“A child safety seat installed in the front seat may not be used without disconnecting the airbag.” (Driving Licence Book, page 117)
If the airbag triggers, this will push the child safety seat against the front seat with great force. The child will be exposed to a great impact, while at the same time the child may be trapped against the front seat.
Note that the question says activated (i.e. connected).
Körkortonline.se offers driving licence theory tests. This is an example of an explanation of a test question. English (driving licence questions in Sweden), Swedish (driving licence questions in Sweden) and Arabic (driving licence questions in Sweden).
More examples of explanations: