1. Which is Longest Dam in India ?

Answer: Hirakod Dam (Orissa)

2. Which is the largest sea in the world ?

Answer:

Philippine Sea

3. Which is longest river in world ?

Answer: Nile, Africa

4. Which is Longest road tunnel in the World ?

Answer: Lærdal Tunnel (Norway - 24.51 kilometre)

5. Which is smallest planet ?

Answer: Mercury

6. Which is smallest and largest bird ?

Answer: Smallest Bird is Humming Bird and Largest bird is Ostrich

7. Which is the highest waterfall in the world ?

Answer: Angel, Venezuela