Harry Potter Trivia Quiz

Voldemort did not appear in the third book, Harry Potter and the Prisoner of Azkaban. He was mentioned and his presence was felt through his followers, but he did not make a physical appearance. In all other books (Philosopher's Stone, Goblet of Fire, Order of Phoenix, etc.), Voldemort appears in person or in corporeal form.

Severus Snape invented the curse Sectumsempra, which causes slashing wounds that cannot be healed by normal means. He created it during his time as a student at Hogwarts. The other curses listed are the Unforgivable Curses: Avada Kedavra (killing curse), Cruciatus Curse (torture), and Imperio (mind control). Note: This is a duplicate of question 57211.

Bartemius Crouch Sr., as head of the Department of Magical Law Enforcement, authorized Aurors to use Unforgivable Curses against Death Eaters during the first Wizarding War. This was a controversial decision that showed how desperate the Ministry was to fight Voldemort. Dumbledore, Fudge, and Bagman never gave such orders.

Bartemius Crouch Jr. is considered Voldemort's most faithful servant. He escaped Azkaban, infiltrated Hogwarts as Mad-Eye Moody, and successfully orchestrated Voldemort's return. While Snape was also a servant, he was working as a double agent. Regulus Black betrayed Voldemort, and Lucius Malfoy was not as fanatically loyal.

Nagini attacked Harry Potter, Severus Snape, and Arthur Weasley. McNair was a Death Eater who worked with Voldemort but was not attacked by Nagini. This question correctly excludes Bathilda Bagshot, focusing on the most prominent Nagini attacks.

The sword was forged by goblins for Godric Gryffindor, but it was not originally made to destroy horcruxes. It only gained this ability after Harry used it to kill the basilisk, causing the sword to absorb basilisk venom, which is one of the few substances capable of destroying a horcrux.

During the Battle of Hogwarts, Vincent Crabbe cast Fiendfyre (cursed fire) in the Room of Requirement, which destroyed Rowena Ravenclaw's diadem horcrux. Though the fire destroyed the horcrux, it also killed Crabbe himself.

Hogwarts has multiple exits beyond just the secret passages and vanishing cabinet. Students and others have exited by flying out on broomsticks, and experienced wizards can Apparate from within Hogwarts grounds (despite the anti-Apparition wards, which can be bypassed or lifted for certain areas).