I know how to delete my account, but I haven't found a way to delete the questions I asked. Is there a way to do that?
There should be a „delete“ link at the bottom of each post. If there isn‘t one, you can also flag for mod attention.
Having said that: There isn‘t actually a need to delete questions, the system cleans up unanswered ones automatically. And if there is an answer, it still might be useful to have the question for future visitors.