Q. Who was defeated by the Sikhs in the 1764 Battle of Sirhind?
Answer: Zain Khan Sirhindi
Notes: In 1764, the Sikhs defeated Afghan governor Zain Khan Sirhindi at the Battle of Sirhind, ending Afghan dominance in the region. The Sikhs captured the city, demolished its fort, and strengthened their power base in Punjab. Later, Gurdwara Fatehgarh Sahib was built on the site.