Q. Which state borders Jharkhand to the north?
Answer: Bihar
Notes: Jharkhand shares its northern border exclusively with Bihar. Bihar borders ten Jharkhand districts including Garhwa, Palamu, Chatra, and Hazaribagh. Uttar Pradesh touches a corner of Jharkhand at Garhwa district but does not form the main northern border. Jharkhand's eastern border is with West Bengal, the southern border with Odisha, and the western border with Chhattisgarh. The delineation of these borders is confirmed by official Indian administrative maps and government records.