GENERAL KNOWLEDGE: What is a booby?

Questions

Soprano Galli-Marie created the title role in which opera by Bizet, at its premiere at the Opera Comique in Paris, on the third of March 1875?

Count Almaviva, a character in Rossini's The Barber of Seville , also appears in which opera by Mozart?

Which archangel is the patron of television and radio workers, messengers and postal workers?

Which apostle is the patron of bankers, book-keepers and tax collectors?

Which architect was responsible for many of Barcelona's famous buildings?