Answers to the Harry Potter Quiz may only be seen by those who have already read and attempted to answer the quiz itself.
#1. There are seven horcruxes.
#2. Barty Crouch Jr. put Harry Potter's name in the Goblet of Fire.
#3. Hermione Granger used a Time Turner in the third book, The Prisoner of Azkaban.
#4. Peter Pettigrew (aka Wormtail) helped Lord Voldemort kill Harry Potter's parents, Lily and James Potter.
#5. The name of Lord Voldemort's snake is Nagini.
#6. Dolores Umbridge's position in The Ministry of Magic is Senior Undersecretary to the Minister.
#7. Ginny Weasley, a first year at the time, opened The Chamber of Secrets.
#8. Ron Weasley's position for the Gryffindor Quidditch Team was Keeper.
#9. Draco Malfoy tried to fix the Vanishing Cabinet in the Room of Requirement.
#10. This answer requires a little explanation. Harry used Draco Malfoy's wand to disarm Lord Voldemort, using the spell, "Expelliarmus!". Voldemort was using the Elder Wand. He shouted the spell, "AVADA KEDAVRA!", the Unforgivable Killing Curse, at the same time Harry shouted the disarming spell. The Elder Wand flew out of Voldemort's hand into Harry's, therefore, backfiring the Killing Curse on himslef, killing Voldemort. So technically, Harry Potter used two wands in the process of killing Lord Voldemort; Draco Malfoy's wand, and the Elder Wand.
If you are a respectable Harry Potter fan, you probably answered all of those correctly.