Q. Which Ballabhgarh ruler led a revolt against the British in 1857?
Answer: Raja Nahar Singh
Notes: Raja Nahar Singh of Ballabhgarh (now Haryana) led the 1857 revolt against British rule. He joined Bahadur Shah Zafar, captured key locations, and was executed in 1858. His estate was confiscated and Ballabhgarh state abolished. His sacrifice is commemorated in Haryana.