#51 Interrogative Adjective “quel” | Usage Rules and Examples In French, when you want to ask questions such as “Which book?”, “What movie?”, or “Which day of the week?”, you use the interrogative adjective quel The form of quel changes depending on the gender (masculine feminine) and number (singular plural) of the noun that follows
Quel Ce - French Tutoring and Resources In English, "which" and "what" are sometimes interchangeable For example: Which word do you not understand? What word do you not understand? In French, you must use a form of "QUEL" in this case "Quel" can also be used in French to exclaim something: What a great class! What smart students!