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. Where is largest Archipelago ?

Answer: Indonesia

3. Which is the largest Mosque in World ?

Answer: Masjid al Haram (Saudi Arabia)

4. Which is the Densest populated State of India ?

Answer: West Bengal

5. Which is the biggest country in Area ?

Answer: Russia

6. Which is smallest state by area of India ?

Answer: Goa

7. Which is the smallest state of India by Population ?

Answer: Sikkim