Article Detail Which is the longest rail tunnel in India ? Answer: Pir Panjal (J&k, 11215 metre) Similar Questions : 1. Which is the largest Zoo in India ? Answer: Zoological Gardens, Alipur, Kolkata 2. Which is smallest continent of world ? Answer: Australia 3. Which is Longest Dam in India ? Answer: Hirakod Dam (Orissa) 4. Which is the highest waterfall in the world ? Answer: Angel, Venezuela 5. Which is the lightest gas ? Answer: Hydrogen 6. Which is longest river of India Answer: Ganges 7. Which is the shortest day in the year ? Answer: December 22 Read more from - Longest and Largest