Q.1.
In Year 4, the students learn the three Unforgivable curses: Avada Kedavra, Crucio, and Imperio. Who teaches it to them?

Truth be told, it was Barty Crouch, Jr.! In Harry Potter and the Goblet of Fire, Barty Crouch Jr. keeps Moody locked in a trunk while he uses Polyjuice Potion to assume his identity.

Q.2.
In the "Chamber of Secrets," Dobby is freed when Lucius Malfoy hands him the journal with an article of clothing inside. What was it?

In order to free a house elf, you need to give them an article of clothing. Before talking to Lucius, Harry snuck one of his socks into the journal before handing it off. When Malfoy tossed it at Dobby, he freed him!

Q.3.
Who owns the Three Broomsticks?

The Three Broomsticks is a popular hangout for Hogwarts students during their Hogsmeade weekends. It’s where all the students go to get their butterbeer.

Q.4.
Who was the Half-Blood Prince?

In the sixth Harry Potter installment, he finds an old potions book for the "Half-Blood Prince." It should've come as no surprise to him that it belonged to his "favorite" Potions professor, Snape.

Q.5.
What color are Dobby's eyes?

Dobby, the house elf, is known for having very large eyes. If you pay attention, you'll know that they're bright green, just like Harry's!

Q.6.
Which of the following characters is an animagus?

Minerva McGonagall is the only animagus you'll find on this list! While some might think Remus is an animagus because of his role as a marauder, Moony is only called such because he's a werewolf!

Q.7.
During the Triwizard Tournament, Harry needs to be able to breathe underwater. While Neville gives it to him in the movie, who really gives Harry gillyweed in the books?

Gillyweed is a plant that one can eat to breathe underwater. After overhearing a conversation between McGonagall and Barty Crouch Jr., Dobby finds and gives Harry the gillyweed.

Q.8.
On which floor is the Room of Requirement?

The room of requirement is a particularly magical room within an already magical castle. It is located on the seventh floor of the castle. Across from the tapestry of Barnabus the Barmy, the room can only be found by those who need it.

Q.9.
What is the name of Hermione's cat?

When students go to Hogwarts, they are allowed to choose a "familiar," an animal that is a sort of pet. While Hermione chose the cat Crookshanks, Harry had an owl named Hedwig. Let's not get started on Ron's familiar, Scabbers, who turned out to be Peter Pettigrew!

Q.10.
What Hogwarts house was Harry Potter in?

Ask and you shall receive! When Harry was getting sorted into a Hogwarts house, the Sorting Hat was bouncing back and forth between Slytherin and Gryffindor. When Harry kept repeating "Not Slytherin, not Slytherin," the Sorting Hat sent him to Gryffindor!