All of the following will produce conductive hearing loss except: (A) Otosclerosis, (B) Serous otitis media, (C) Endolymphatic Hydrops, (D) Suppurative otitis media
Answer is C. Otosclerosis, serous otitis media, suppurative otitis media come under acquired causes of conductive hearing loss Endolymphatic hydrops which is Meniere's disease is associated with sensorineural deafness. Ref: Dhingra 7e pg 32,34.