1. A person who suffers from haemophilia has what wrong with them?

2. Gunpowder was invented by

3. Riboflavin is another name for which vitamin?

4. What is one-half cubed?

5. What type of animal is a 'Portuguese Man of War'?

6. Which planet is closest in size to the Earth?

7. What does a chronometer measure?

8. Silicon dioxide is found in which common substance?

9. Mycology is the study of

10. Which of the following would you use a clinometer to measure?