Multiple choice general knowledge CM of Assam Bhupinder Singh Hooda Ashok Gehlot Neiphiu Rio Tarun Kumar Gogoi Reveal answer Fill a bubble to check yourself D Correct answer Explanation Tarun Kumar Gogoi served as the Chief Minister of Assam from 2001 to 2016, making him the longest-serving CM in the state's history. The other options are CMs of different states: Hooda (Haryana), Gehlot (Rajasthan), and Rio (Nagaland).