Explanation:

Article 63 of Indian Constitution states that "There shall be a Vice President of India." The Vice President acts as President in the absence of the president due to death, resignation, impeachment, or other situations. The Vice President of India is also ex officio Chairperson of the Rajya Sabha. In case of death of both the President and Vice-President of India, Cheif Justice of India shall act as the President of India. Mohammad Hidayatullah OBE pronunciation (help. info) (17 December 1905 – 18 September 1992) was the 11th Chief Justice of India serving from 25 February 1968 to 16 December 1970, and the sixth Vice President of India, serving from 31 August 1979 to 30 August 1984.