NSS, BIT Mesra | 592 followers on LinkedIn. NSS, BIT Mesra is a student-run non-profit organization working diligently for the welfare of society since 1969. | The National Service Scheme (NSS) was evolved and introduced by the Government of India in the year 1969. NSS was started because of the desirability of involving students in national service. It aims at developing among students a sense of participation in nation-building through social work.