Misc: What inert gas is used in fluorescent lights?

Questions

What business did brothers Maurice & Charles start in 1970, to become the worlds 5th largest of its type by 1985?

By what name was Kampuchea formally known?

What did Pope Pius V do to Queen Elizabeth in 1570 (lets keep it clean, huh?)?

Which group named itself after an American firetruck?

What mode of transport is Phileas Fogg famous for using?