Article Detail Which is the lightest metal ? Answer: Lithium Similar Questions : 1. Which is Largest forest state of India ? Answer: M.P. 2. Which is the Densest populated State of India ? Answer: West Bengal 3. Which is the largest Mosque in India ? Answer: Jama Masjid (Delhi) 4. Which is largest Creature in world ? Answer: Blue Whale 5. Which is Largest Dome in World ? Answer: St. Peter's Basilica (Rome) 6. Which is longest river in world ? Answer: Nile, Africa 7. Longest rail tunnel in the world ? Answer: Seikan Tunnel (Japan - 53.9 Km) Read more from - Longest and Largest