Misc: which british prime minister was the only one to marry a divorcee?

Questions

in 1971 on which release did santana lament 'shes gonna make a devil out of me'?

in 1973, deep purple released which popular double live album?

in 1974, ian gillian was replaced by david coverdale in which band?

what band had their first hit with 'radar love'?

in 1975, jack nicholson won the oscar for best actor in which film?