The deceased, Rahul Prajapat, was a research scholar at the Chemistry department. He was staying at the Aiyyer hostel and was found dead by his colleagues late on Wednesday.
According to police, the student appeared to have committed suicide by consuming some poisonous substance as he was frothing from the mouth when his body was found.
Prajapat was from the neighbouring Jaunpur district. His hostel mates told the police that he was keeping to himself for the last few days and apparently looked disturbed and depressed.
He was also undergoing some treatment for a brain disease.
Prajapat was alone in his room as his room partner had gone home two days back.
His body has been sent for a post-mortem examination and his parents have been informed, the police said.
No suicide note was recovered from the room.