In fact I chose to put these 9 symbols because they are associated with chemical risks and because they are currently used in chemistry labs, which is not the case of radioactivity and biohazard.
As they form a system (the GHS) which does not include other symbols I decided to keep only these ones.
I was thinking this quiz would not interest anyone in this language, thanks for your comment by the way :)
As they form a system (the GHS) which does not include other symbols I decided to keep only these ones.
I was thinking this quiz would not interest anyone in this language, thanks for your comment by the way :)