1.On what day does Harry run into Draco and Narcissa in Diagon Alley?
3rd August in Harry Potter and the Half Blood prince.
2. How does Harry get detention in DADA?
He is accused of lying by Professor Umbridge when he tells everyone Voldemort is back
3. How does Ron get his spot on the Gryffindor Quidditch Team?
Hermione jixes his opponent for the Keeper during the trials.
4. When is the first Apparition lesson?
In the sixth year at Hogwarts.
5. When do Ron and Ginny breakup with Lavender and Dean?
In Harry's sixth year. Lavender and Ron split up after she saw Hermione and Ron together, not knowing Harry was under the invisibility cloak. Dean and Ginny split up after Harry bumped into them after taking Felix Felisis and Ginny thought Dean was pushing her around - that was the last straw!
6. What Horcrux is hidden in the cave?
The locket, except it wasn't the real locket as that had been taken before.
7. Who does Filch have a romance with?
Possibly the Librarian, Madam Pince
8. When is Voldemort’s birthday and birth place?
His birthday is New Years Eve and he was born in an orphanage in London
9. What is Dumbledore’s favorite flavor of jam?
10. Who is “Mollywobbles” and who uses the name?
Molly Weasley - it is Arthur's pet name for her.