Here's why you might be asking and possible answers:
* School/Classroom Quiz: If you're talking about a quiz given in a classroom, the number of questions would depend on your teacher and the level of difficulty they want.
* Online Quizzes: There are many online quizzes about the book, but the number of questions varies widely. You could find a 10-question quiz, a 20-question quiz, or even longer ones!
* Fan-Made Tests: Some fans might have created their own tests, so again, the number of questions is not set.
To find out the number of questions on a specific test, you'll need to look at the source of that test.