1. Which is longest railway station ?

Answer: Grand Central Terminal, Chicago(USA).

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

Answer: Rajasthan

3. 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.

4. Which is the highest Plateau ?

Answer: Pamir, Tibet

5. Which is Biggest ocean in the world ?

Answer: Pacific ocean

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

Answer: Rajasthan

7. Which is the Highest mountain peak ?

Answer: Mount Everest (8,850 m)