1. Which is the largest Zoo in the World ?

Answer: Berlin Zoological Garden (Germany)

2. Which is the highest waterfall in the world ?

Answer: Angel, Venezuela

3. Which is the shortest day in the year ?

Answer: December 22

4. Which is Longest road tunnel in the World ?

Answer: Lærdal Tunnel (Norway - 24.51 kilometre)

5. Which is tallest statue in world ?

Answer:

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

6. Which is the Densest populated State of India ?

Answer: West Bengal

7. Which is largest Delta of India ?

Answer: Sundarban (W. Bengal)