I'm sure they have already all been answered, but here's my go.

Who holds the record for " Most First Round Knockouts" in his career? Dunno, will say Valero or Lamar Clarke

Who holds the record for the most Knockouts during their career? Archie Moore?

Which French boxer started his career as a Flyweight and finished it as a Heavyweight, fighting in every division boxing has to offer? Georges Charpentier

What Light-Heavyweight Champion owns the record for consecutive successful defenses? Virgil Hill?

What Welterweight Champion owns the record for consecutive successful defenses? Dunno

Which was the first fight to be broadcast over the radio? Who were the 2 fighters?

Willard vs Dempsey??