Which of the following Indian President also served as Speaker of Lok Sabha?

Among the following who has been Speaker of Lok Sabha prior to his Election as President of India ?

Who among the following Chief Justices of India also acted as the President of India?

Which of the following statements is correct about the President of India?

Which one of the following methods is followed in electing the President of India?

Which one of the following President of India has been the Governor of Bihar?