Misc: what was the pseudonym of Vladimir Illych Ulyanov?

Questions

Which London tube line is usually red on maps?

Which major US city hosts an annual grand prix auto race on its streets?

Which mammal boasts the most nipples the cat, horse or pig?

Which man who invented the microphone in 1876 died on august 2, 1922?

Which musical includes the song "if i were a rich man"?