1. What element is the main constituent of diamonds?
2. In what year did the Great October Socialist Revolution take place?
3. What chemical element forms the basis of the haemoglobin molecule responsible for the transport of oxygen in the blood?
4. In what year did the Berlin Wall fall?
5. Who wrote the “Great Gatsby” novel?
6. In what year was the first official Olympics held in modern times?
7. What chemical element is used to create rainbows in televisions and computer monitors?
8. For which Galileo is famous?
9. Hitler's party is known as:
10. When the First Afghan War took place in
