Questions that seek specific information.

Question that seeks information directly.

(grammar) A pronoun used in a question. In English, the five interrogative pronouns are what, which, who, whom, and whose (also used as relative pronouns). These require no antecedent.

An interrogative word or question word is a function word used to ask a question, such as what, which, when, where, who, whom, whose, why, whether and how.

Asking or questioning form of speech.