Yogeshwar Singh, collapsed while undergoing screening test at a recruitment rally of Territorial Army (TA), they said.
He was taken to a hospital where doctors declared him as brought dead.
Prima facie it seems that the youth may have suffered a heart attack, police said, adding the reason behind the death is being investigated.
The Army has been holding recruitment rallies in six districts of Jammu and Kashmir to fill 1,305 vacancies in the Territorial Army.