Answer
Naveen Patnaik's tenure as Union Minister ended in 2000. He served as the Minister of Steel and Mines in the Atal Bihari Vajpayee-led government from 1998 to 2000. After his father, Biju Patnaik, passed away in 1997, Naveen Patnaik resigned from his position as Union Minister and returned to Odisha to lead the Biju Janata Dal (BJD) party.