Article Detail Which is Longest Dam in India ? Answer: Hirakod Dam (Orissa) Similar Questions : 1. Which is Largest railway route in India ? Answer: Dibrugarh in Assam to Kannyakumari in Tamil Nadu. 2. Which is biggest planet ? Answer: Jupiter 3. Which is the largest Zoo in India ? Answer: Zoological Gardens, Alipur, Kolkata 4. Which is longest river of South India ? Answer: Godavari 5. Which is the longest rail tunnel in India ? Answer: Pir Panjal (J&k, 11215 metre) 6. Which is the deepest lake of the world ? Answer: Lake Baikal 7. Which is smallest and largest bird ? Answer: Smallest Bird is Humming Bird and Largest bird is Ostrich Read more from - Longest and Largest