Rap Trivia: Told us he'd "rather be judged by 12 than carried by 6."?

Questions

official taxis in london are usually what colour?

official taxis in new york are what colour?

what astronomical unit of distance is used for measurements beyond the solar system?

what is the old name for solid sodium hydroxide?

what system was introduced in 1967 to deal with the loud hiss on cassettes?