Article Detail Which is Longest national highway of India ? Answer: NH-7 ( Varanasi to Kanyakumari - 2,369 km) Similar Questions : 1. Which is the largest Zoo in the World ? Answer: Berlin Zoological Garden (Germany) 2. Which is the Largest lake of the world ? Answer: Caspian Sea (371,000 sq km) 3. Which is Longest Dam in India ? Answer: Hirakod Dam (Orissa) 4. Which is Place of heaviest rainfall ? Answer: Mausinram (Meghalaya) 5. Which is the largest Mosque in World ? Answer: Masjid al Haram (Saudi Arabia) 6. Which state is largest by Population ? Answer: Uttar Pradesh 7. Which is smallest continent of world ? Answer: Australia Read more from - Longest and Largest