1. Which Indian state is having longest coastline ?

Answer: Gujrat

2. Which is longest river of South India ?

Answer: Godavari

3. Which is tallest statue in world ?

Answer:

Spring Temple Buddha located in the Zhaocun township of Lushan County, Henan, China

4. Which is the Densest populated State of India ?

Answer: West Bengal

5. 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.

6. Which is the largest sea in the world ?

Answer:

Philippine Sea

7. Which is the longest Platform ?

Answer:

Gorakhpur railway station, Uttar Pradesh, India (1355.40 meters)