Answer: NH 27
Notes: National Highway 27 (NH 27) is the longest East-West National Highway in India, connecting Porbandar in Gujarat to Silchar in Assam. Spanning approximately 3,507 km, it is the second-longest highway in India overall, following the North-South corridor (NH 44). It is a vital part of the East-West Corridor of the National Highways Development Project (NHDP).
