Answer: Santali
Notes: Santali, spoken by the Santal tribe, uses the Ol Chiki script invented by Pandit Raghunath Murmu in 1925. It is recognized in the Eighth Schedule of the Indian Constitution and taught in tribal schools of Bihar and Jharkhand.
📌 Question Number: 98 in Demography, Tribes, Census and Society of Bihar in the above course in App.