GENERAL KNOWLEDGE: Which famous building was erected for the Great Exhibition of 1851?

Questions

Which country was known as 'the Cockpit of Europe'?

As whom was Jan Ludvik Hoch better known?

In the book Goodbye Mister Chips, what subject did Mr. Chipping teach?

Queen Victoria was a carrier of which disease that was responsible for the death of her son, Leopold?

Which acid is found in unripe apples and other fruit?