1. 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.

2. Which is longest railway station ?

Answer: Grand Central Terminal, Chicago(USA).

3. Which is the lightest metal ?

Answer: Lithium

4. Which is largest Delta of India ?

Answer: Sundarban (W. Bengal)

5. Which is the largest Mosque in World ?

Answer: Masjid al Haram (Saudi Arabia)

6. Which is the Largest lake of the world ?

Answer: Caspian Sea (371,000 sq km)

7. Which is smallest planet ?

Answer: Mercury