Where should I go for pursuing MBBS PGIMS, Rohtak or NDMC Delhi (Hindu Rao Hospital) ?

Go for PGIMS Rohtak and dont even think twice. PGIMS Rohtak is one of the oldest and most reputed colleges in North India. It has some of the most learned and experienced faculty members many of whom are best-selling authors of medical textbooks. 

NDMC is just an ordinary medical college not anywhere near the standards of PGIMS Rohtak. It's associated with the Hindurao Hospital which is quite well known in Delhi. However, the medical faculty and the standard of medical training are rumored to be substandard. Moreover, the MCI has canceled the Recognition of NDMC quite a few times already. So, I will not suggest you take the risk of joining this college just because it's located in Delhi. 

Choose PGIMS Rohtak to stay on the safe side.