Hi Prashant kumar prusty,i will mention some good hospitals for DNB GEN SURG,

Railway Hospital, Connaught place, Delhi

Deen Dayal Upadhyay Hospital, Delhi

Stephens Hospital, Delhi

Sir Ganga Ram Hospital, Delhi

Narayana Hrudyalay ,Bangalore

Sri Sathya Sai Institute for Medical Sciences, Ananthpur

Rural Trust Hospital, Anathpur

Government Hospital, Chandigarh

Fortis Hospital, Mohali 

Railway Hospital, Mumbai

Bhabha Hospital, Bandra

KJ Somaiya Medical College, Sion

Port Trust Hospital, Wadala

Kem Hospital, Pune

Hope this helps, good luck