Misc: How many colours are there in a rainbow?

Questions

By what name was Jean Baptiste Poquelin better known?

In the musical work '"Peter and the Wolf", the duck is portrayed by which musical instrument?

Maersk, Premiair and Sterling are all current airlines from which European country?

What animal is featured on the cover of Pink Floyd's album "Atom Heart Mother"?

Who lives at Ray Mill House in Wiltshire?