Q. Which is the world's northernmost capital of a sovereign state?
Answer: Reykjavik
Notes: Reykjavik is the world's northernmost capital of a sovereign state. Reykjavik is the capital and largest city of Iceland. It is located in southwestern Iceland, on the southern shore of Faxafloi bay. Its latitude is 64°08' N, making it the world's northernmost capital of a sovereign state.