NSS is a voluntary and value- based student youth program, is one of the major youth schemes being operated in the Ministry of Youth Affairs & Sports. The Scheme was launched with the primary objective of developing the personality and character of the student youth through voluntary community service. It was launched on 24th September 1969, during the birth centenary celebration of our father of our nation, Mahatma Gandhi. The NSS unit of PDCH along with YRC unit collaborates with The Tamilnadu Dr. M. G. R. Medical University, Chennai to conduct voluntary blood donation camps in our institution. It also celebrates various commemorative days like World environment day, World no tobacco day, World cancer day, etc., to spread awareness in the society.