Misc: where were 3,700,000 people killed in a flood in 1931?

Questions

Who owned the chocolate factory in Roald Dahls 1964 childrens story Charlie and The chocolate Factory?

What does the acronym BUPA stand for?

A pantry was originally used for the storage of which foodstuff?

What is the name given to parrallel beams which stretch from one wall to another in a building to support the floors?

Samuel Hahnemann was the founder of which branch of alternative medicine?