Q. When was the decisive Battle of Sobraon fought?
Answer: 10 February 1846
Notes: The Battle of Sobraon on 10 February 1846 ended the First Anglo-Sikh War, leading to British annexation of Punjab. It was fought near the Sutlej River and marked by heavy casualties, resulting in the defeat of the Sikh Khalsa Army by British East India Company forces under Sir Hugh Gough.