Police suspect suicide; the student had been preparing for the engineering entrance exam since January, taking this year's student death toll in Kota to seven.
The World Health Organisation (WHO) has sought additional information from the Centre following media reports referring to oxytocin injection manufactured by Jackson Laboratories.
The event, held in Kota, widely known as India's coaching capital, focused on issues such as competitive examinations, paper leaks, unemployment and the pressures faced by students.
