Multiple choice What does Harry use to destroy Voldemort's diary? Gryffindor's sword Fiendfyre Basilisk fang Cruciatus Curse Reveal answer Fill a bubble to check yourself C Correct answer Explanation Harry destroys Tom Riddle's diary in the Chamber of Secrets by stabbing it with a basilisk fang. The venom of the basilisk is one of the few substances capable of destroying a horcrux.