Yeshwant Vishnu Chandrachud (12 July 1920 -- 14 July 2008) was the 16th Chief Justice of India, serving from 22 February 1978 to the day he retired on 11 July 1985. Born in Pune in the state of Maharashtra, he was first appointed Judge to the Supreme Court of India on 28 August 1972 and is the longest-serving Chief Justice in India's history at 7 years and 4 months. His nickname was Iron hands after his well regarded unwillingness to let anything slip past him.

Answer this question based on the passage: who had the longest tenure as chief justice of india? OK. Let's think. My stream of consciousness:
This is the relevant information: Born in Pune in the state of Maharashtra, he was first appointed Judge to the Supreme Court of India on 28 August 1972 and is the longest-serving Chief Justice in India's history at 7 years and 4 months. The answer is Yeshwant Vishnu Chandrachud.