Article Detail Which is the longest rail tunnel in India ? Answer: Pir Panjal (J&k, 11215 metre) Similar Questions : 1. Which is the state largest by area in India ? Answer: Rajasthan 2. Which is Biggest ocean in the world ? Answer: Pacific ocean 3. Which is the largest desert in India ? Answer: Thar (Rajasthan) 4. Which is the lightest gas ? Answer: Hydrogen 5. Which is Longest national highway of India ? Answer: NH-7 ( Varanasi to Kanyakumari - 2,369 km) 6. Which is the longest rail tunnel in India ? Answer: Pir Panjal (J&k, 11215 metre) 7. Which is the lightest metal ? Answer: Lithium Read more from - Longest and Largest