Hyderabad,Dec 1(INN):SK Singh Governor of Rajasthan passed away in New Delhi on Tuesday after a prolonged illness.He was 77 and is survived by his wife Manju Singh and two sons.Singh was admitted to Gangaram Hospital in Delhi during last week.He was appointed governor of Rajasthan Aug 19,2007.Prior to becoming governor of Rajasthan,Singh was the governor of Arunachal Pradesh from December 2004 to September 2.Born on January 24, 1932,Singh was a former Foreign Secretary and had become Rajasthan Governor in 2007 after his predecessor Pratibha Patil was nominated as a candidate for the post of the country's President.