The incident took place last night when Pachu, resident of Badagaon locality in Shahganj area, had some dispute with wife Banna after which he threw acid on her and three children Amni (5), Mehruddin (4) and Saleh (15), they said.
All the four were rushed to a hospital, where their condition was stated to be stable.
An FIR has been registered and investigation is on.