1. Which is the state largest by area in India ?

Answer: Rajasthan

2. Which is the largest Mosque in India ?

Answer: Jama Masjid (Delhi)

3. Which is Longest road tunnel in the World ?

Answer: Lærdal Tunnel (Norway - 24.51 kilometre)

4. Longest rail tunnel in the world ?

Answer: Seikan Tunnel (Japan - 53.9 Km)

5. Which is Largest railway route in India ?

Answer: Dibrugarh in Assam to Kannyakumari in Tamil Nadu.

6. Which is highest dam in world ?

Answer:

Jinping-I Dam - 305 m (1,001 ft) in China on Yalong river.
Second Highest is Nurek Dam 300 m (980 ft) Tajikistan on Vakhsh river.

7. Which is largest continent ?

Answer: Asia