In case the post of President of India falls vacant, and there is no Vice-President also, who among the following would be the acting President?

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

Who of the following before becoming the President of India did not hold the office of Vice-President?

Who among the following is not appointed by the President

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

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