Article Detail Which is Longest national highway of India ? Answer: NH-7 ( Varanasi to Kanyakumari - 2,369 km) Similar Questions : 1. What is the name of tallest Animal ? Answer: Giraffe 2. Which is longest river in world ? Answer: Nile, Africa 3. Which is the Densest populated State of India ? Answer: West Bengal 4. Which is the longest day in the year ? Answer: June 21 5. Which is longest river of India Answer: Ganges 6. Which is the Highest mountain peak ? Answer: Mount Everest (8,850 m) 7. Which is longest railway station ? Answer: Grand Central Terminal, Chicago(USA). Read more from - Longest and Largest