Whatever kind you want it to be!
Adjectives answer these four questions: Which one? What kind? How much? Whose?
retorical questions
Testable questions.
Related Questions are Questions that are similar or Questions that kind of mean the same thing.
this one
I'm asking what are the kind of questions
They asked questions about anything which they did not understand.
this year we have to know about enviromental questions
Personally, stupid questions. Really stupidquestions.
Cyberbullying questions will get you blocked quickly and most times without warning, nonsense questions, and inappropriate questions.
Questions relating to 'demography'; the statistical study of human populations.
you can post qwestins on what you are curious about.