Problem: What is the common name of Taxus Baccata?
Answer: yew

Problem: The rationing of petrol was lifted in what year after the 2nd World War?
Answer: 1950

Problem: What highly toxic element was traditionally used in thermometers, posing a substantial safety and disposal risk?
Answer: mercury

Problem: Who was the first member of the Royal Family to appear on Desert Island Discs
Answer:
princess margaret