1. Which is the highest waterfall in the world ?

Answer: Angel, Venezuela

2. Which is Largest library in the world ?

Answer: United State Library of Congress, Washington D.C.

3. Which is the Densest populated State of India ?

Answer: West Bengal

4. Which is the longest wall in world ?

Answer: Great wall of China

5. Which is smallest continent of world ?

Answer: Australia

6. Which is tallest statue in world ?

Answer:

Spring Temple Buddha located in the Zhaocun township of Lushan County, Henan, China

7. Which is the lightest gas ?

Answer: Hydrogen