Hey Deepak,

(Answering in reference to DU)

There is an ECA quota (i.e Extra Curricular Activity) offered by DU where you can get the benefit of NSS.

17 colleges of the University are currently offering ECA quota under the  National Service Scheme (NSS) category such as-

Deshbandhu College

Miranda House

Satywati College

Kamala Nehru College

Motilal Nehru College.

There are two rounds of trials that basically revolve around the social work applicants did in their schools. In the first round, they ask you to pick a number of areas where you might have worked on for instance tree plantations, awareness drives, rallies etc. In the second round, they cross-reference your choices along with proofs that you must provide especially photographs. In addition, a panel of 6-7 judges also pose some general questions on the NSS motto, its symbol, its members, and its origins.

This is how you can avail your benefit for NSS under ECA quota.

Best of luck! :)