This week's Friday Brain-teaser from xrefer tests your knowledge of geography. Answers here:

1. In which American city is the White House - the home of the president?
2. What is the present name of the country that used to be called "Siam"?
3. Which country consists of two islands separated by the Cook Strait?
4. What is the largest state of the USA?
5. The city of St Petersburg had two different names before it reverted to its present name. Give one of these two former names.
6. The island of Crete is part of which country?
7. Which large island, a dependency of Denmark, was discovered in about 982 by Eric the Red?
8. Is the city of Mecca in Iran, Iraq or Saudi Arabia?
9. Which group of English islands includes St Mary's, Tresco and Bryher?
10. The Kiel Canal joins which two seas?