1. Which is Largest Dome in World ?

Answer: St. Peter's Basilica (Rome)

2. Which state is largest by Population ?

Answer: Uttar Pradesh

3. Which Indian state is having longest coastline ?

Answer: Gujrat

4. Which is Place of heaviest rainfall ?

Answer: Mausinram (Meghalaya)

5. Which is the longest road in India ?

Answer: Grand Trunk Road (2500 Km)

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 the longest River in the World ?

Answer: Nile