1. Which is the longest rail tunnel in India ?

Answer: Pir Panjal (J&k, 11215 metre)

2. Which is the biggest museum in the world ?

Answer: British Museum, London

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 mountain peak ?

Answer: Mount Everest (8,850 m)

5. Which is Longest Dam in India ?

Answer: Hirakod Dam (Orissa)

6. Which is Place of heaviest rainfall ?

Answer: Mausinram (Meghalaya)

7. Which is the brightest planet ?

Answer: Venus