Answer: He stayed on his back for almost an entire day
Naruto was able to stay on his back the entire day, which proved to Gamabunta that he summoned him. Gamabunta also looked inside the scroll and saw that he signed the contract. However, doing this caused Naruto to be exhausted and he was in the hospital for 3 days.
From Quiz: The Ultimate 'Naruto' Test Part 7
Answer: Naruto, Kidomaru
In the Chuunin Exam finals, he battles Naruto, much to his liking. During the mission to bring Sasuke back, it was said that he was the only one capable of fighting Kidomaru, so he stayed back to fight him while the rest continued on.
From Quiz: How Well Do YOU Know 'Naruto'?
Answer: Kimimaro
Kimimaro Kaguya is able to remove his spine to fight with, and it is not a pretty image.
From Quiz: "Naruto" Diary Entries
Answer: Idate
When he took the Chunin Exams, he failed during the first stage. A Chunin from the village tricked him saying that if he gave him a lightning sword, he would pass the Exams. He was tricked just like Naruto. He ran away from the Leaf Village because Ibiki was almost killed.
From Quiz: The Ultimate 'Naruto' Test' Part 4
Answer: Jiraiya
Kakashi reads the books in his spare time. Jiraiya, one of the Sannin, writes the books.
From Quiz: The Ultimate 'Naruto' Test' Part 3
Answer: Anko Mitarashi
She was one of the people Orichimaru places a curse mark on. She's an elite ninja for Konoha.
From Quiz: The Ultimate 'Naruto' Test Part 2
Answer: S-rank criminal
Akatsuki is a secret organization who does dark missions. Sasuke's brother Itachi and Orichimaru are part of the organization. S-rank criminals are people who did serious crimes such as serious murder or theft.
From Quiz: The Ultimate 'Naruto' Test
Answer: Go
'Go' is sung by FLOW.
From Quiz: Opening and Ending Songs
Answer: Tokubetsu Jounin
It is a Tokubetsu Jounin who watches over the parts of the Chuunin exams. It is based on the Tokubetsu Jounin's special skill which part of the Chuunin Exam they will be examiner for.
From Quiz: "Naruto" Ninja Levels
Answer: 2
He has two, his normal blue chakra, and the Nine-Tail's red chakra.
From Quiz: A "Naruto" Quiz - Episodes 1-23