Is baroque music classical music?

Answer 1: No it isn't

Answer 2: Technically no. Baroque music belongs to its own period, the Baroque period (1600-1760). It was followed by the Classical period (1750-1830). Baroque music and Classical music differ in terms of music theory, instrumentation, and key people. However, a lot of people (laymen) generalize pre-1900s music as "Classical music", so you could call Baroque music Classical music. Also, instead of using the term "Classical music" you could use the term "Serious music"