Name The Year: Transistor as a substitute for Radio tubes announced (Bell Labs).?

Questions

What coloured jersey is worn by the leader of the Tour de France cycling race?

Bagels are a traditional bread baked by followers of which religion?

What does the musical term "Piano" mean?

What is the scientific term for the study of poisons?

What was the name of Earths single continent before it spit up into the continents as they are today?