This is fun! But I'm a pretty big HP fan and a lot of the answers are flat wrong.
Q: What type of potion did Malfoy steal from Professor Slughorn?
A: Felix Felicis (Liquid Luck). (Wrong, he stole polyjuice potion to disguise Crabbe and Goyle.)
Q: The entrance hall of The Ministry of Magic is lined with what?
A: Talking statues of the Ministry's previous Heads of Department. (Wrong, it's fireplaces connected to the Floo network)