Question

задайте вопрос 1) Her name is Mary

Answer 1

1)What is her name?
2) Is her name Mary?

Answer 2

Her name is Mary.
Is her name Mary? - общий вопрос
Her name is Mary, isn't it? - разделительный вопрос
What is her name? - вопрос к подлежащему
Whose name is Mary? - специальный вопрос 
Is her name Mary or Anna? - альтернативный вопрос