I would like to know the differences between "qué" and "de qué" in terms of parts of speech and usage (All I know is "qué" is an interrogative pronoun).
Background: I was able to find some information about the differences in parts of speech and use between "que" and "de que" (no accent marks). But, I have not been able to find anything about the difference between "qué" and "de qué" (with accent marks).
The information I found about "que" and "de que" says that the first is a relative pronoun, the latter a conjunction. Also, I read that if "which" is substituted for "that" and the sentence still makes sense, then "que" should be used instead of "de que".
Now, I would like to know about "qué" and "de qué". The information I found on "que" and "de que" (no accent marks) doesn´t seem to apply to "qué" and "de qué" (with accent marks).
Thank you.