76-year-old Yadav was admitted to a city hospital on June 22 after he suffered some cardiac problems. He is survived by four daughters and two sons.
Yadav was a three-time Member of Parliament from Munger parliamentary seat of Bihar and had served as Minister of State for Education between 1971-77 in Indira Gandhi's cabinet.
He was also a member of the Congress Working Committee, the apex decision making body of the party, during Rajiv Gandhi's tenure.
A post graduate in Science from Bihar University in Ranchi, Yadav had served as a professor and junior scientist before joining politics.
Closely linked with various academic and research organisations, the Congress leader had written a number of books including "Grassroot Planning", "Dynamics of Development" and "Uranium and Beyond".
His last rights will be held in his home town Munger, Yadav's elder son, Shubhendu said.