If you were a student of any of the schools/colleges mentioned below, then you can register as its alumni that helps in making a database for all the students of that college and you can search through their database for your long forgotten friends and classmates. Note that the database is provided by alumni.net and you have to register for it before you can actually search for your friends. 

Fertilizer Model Sr. Secondary School, Sector 4, Naya Nangal.

Fertilizer Sr. Secondary School, Sector 5, Naya Nangal.

B.B.M.B   D.A.V  Public School, Nangal Town Ship.

Shivalik College, Naya Nangal.

S.V.S.D. College, Bhatoli (H.P.).