1. Which is the lightest metal ?

Answer: Lithium

2. Which is the Densest populated State of India ?

Answer: West Bengal

3. Which is longest river of South India ?

Answer: Godavari

4. Which is longest river in world ?

Answer: Nile, Africa

5. Which is the largest Mosque in World ?

Answer: Masjid al Haram (Saudi Arabia)

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 Highest Award in India ?

Answer: Bharat Ratna