Article Detail Which is the longest road in India ? Answer: Grand Trunk Road (2500 Km) Similar Questions : 1. Which is the largest Zoo in India ? Answer: Zoological Gardens, Alipur, Kolkata 2. Which is the longest River in the World ? Answer: Nile 3. Which Indian state is having longest coastline ? Answer: Gujrat 4. Which state is largest by Population ? Answer: Uttar Pradesh 5. Which is largest Creature in world ? Answer: Blue Whale 6. Which is the deepest lake of the world ? Answer: Lake Baikal 7. Which is largest Delta of India ? Answer: Sundarban (W. Bengal) Read more from - Longest and Largest