1. Jane will be a famous writer.
Jane will be a famous writer, won't she? - разделительный
Will Jane be a famous writer? - общий
Will Jane be a famous writer or doctor? - альтернативный
2. My children like ice cream very much.
My children like ice cream very much, don't they? - разделительный
Do my children like ice cream very much? - общий
Do my children like ice cream or apples very much? - альтернативный