Q. Who founded the Buddhi Vardhak Sabha in 1851 to promote socio-religious reform and uplift the Gujarati Hindu community?
Answer: Narmadashankar Dave
Notes: Buddhi Vardhak Sabha was established in 1851 by Narmadashankar Dave in Maharashtra for educating and reforming Gujarati Hindus. Dave was a major Gujarati poet and intellectual leader during the socio-religious reform movements of 19th-century western India.