Q. Which is the longest national highway in India? Answer:
National Highway 44
Notes: National Highway 44 (NH 44) is the longest-running major north–south National Highway in India. It begins from Srinagar and terminates in Kanyakumari; the highway passes through the states of Jammu & Kashmir, Punjab, Haryana, Delhi, Uttar Pradesh, Madhya Pradesh, Maharashtra, Telangana, Andhra Pradesh, Karnataka, and Tamil Nadu.