Article Detail Which is the Densest populated State of India ? Answer: West Bengal Similar Questions : 1. Which is longest tributary river of India ? Answer: Yamuna 2. Which is largest Dome in India ? Answer: Gol Gumbaz (Karnataka) 3. Which is the biggest museum in the world ? Answer: British Museum, London 4. Which is the Largest lake of the world ? Answer: Caspian Sea (371,000 sq km) 5. Which is the longest road in India ? Answer: Grand Trunk Road (2500 Km) 6. Which is Largest railway route in India ? Answer: Dibrugarh in Assam to Kannyakumari in Tamil Nadu. 7. Which is Longest national highway of India ? Answer: NH-7 ( Varanasi to Kanyakumari - 2,369 km) Read more from - Longest and Largest