Here are 15 general knowledge questions and answers for school boys:

1. What is the capital city of Australia? Canberra
2. Who wrote "Harry Potter and the Philosopher's Stone"? J.K. Rowling
3. What is the largest ocean on Earth? Pacific Ocean
4. What is the main ingredient in guacamole? Avocado
5. What is the capital of Japan? Tokyo
6. What is the tallest mountain in the world? Mount Everest
7. Who painted the Mona Lisa? Leonardo da Vinci
8. What is the powerhouse of the cell? Mitochondria
9. In which year did World War II end? 1945
10. What is the capital of Brazil? Brasília
11. Who is the author of "To Kill a Mockingbird"? Harper Lee
12. What is the currency of China? Renminbi (Yuan)
13. Which planet is known as the "Red Planet"? Mars
14. Who discovered penicillin? Alexander Fleming
15. What is the largest mammal on Earth? Blue Whale