Article Detail Which is Longest national highway of India ? Answer: NH-7 ( Varanasi to Kanyakumari - 2,369 km) Similar Questions : 1. Which is Longest Dam in India ? Answer: Hirakod Dam (Orissa) 2. Which is Highest Award in India ? Answer: Bharat Ratna 3. Which is the shortest day in the year ? Answer: December 22 4. What is the name of tallest Animal ? Answer: Giraffe 5. Which is the deepest lake of the world ? Answer: Lake Baikal 6. Which is Largest forest state of India ? Answer: M.P. 7. Which is smallest and largest bird ? Answer: Smallest Bird is Humming Bird and Largest bird is Ostrich Read more from - Longest and Largest