Article Detail Which is the longest road in India ? Answer: Grand Trunk Road (2500 Km) Similar Questions : 1. Which is largest Delta of India ? Answer: Sundarban (W. Bengal) 2. Which is the largest Zoo in the World ? Answer: Berlin Zoological Garden (Germany) 3. Which is the largest sea in the world ? Answer: Philippine Sea 4. Which state is largest by Population ? Answer: Uttar Pradesh 5. Which is the largest epic in world ? Answer: Mahabharat 6. Which is the highest waterfall in the world ? Answer: Angel, Venezuela 7. Which is largest Dam in World ? Answer: Three Gorges (China) Read more from - Longest and Largest