These can be given as short written quizzes, homework assignments, bell prompts, exit tickets, or oral questions for class points. In fact, if you use the questions to award points, you can give awards at the end of the novel for 1st, 2nd, and 3rd place.
Many of these questions can be expounded upon for a discussion or chapter test by asking students to explain why. Over 100 questions with answers.
Bonus: Mid Unit Exam with answer key. My class read this novel over a period of 5 weeks.